Dolby Professional Reference Monitor Manual ® Issue 1 Model PRM-4220 Part Number 9112220
Dolby Laboratories, Inc. Corporate Headquarters Dolby Laboratories, Inc. 100 Potrero Avenue San Francisco, CA 94103‐4813 USA Telephone 415‐558‐0200 Fax 415‐863‐1373 www.dolby.
Regulatory Notices FCC NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
Regulatory Notices 15. CAUTION: Troubleshooting must be performed by a trained technician. To reduce the risk of electric shock, do not attempt to service this equipment unless you are qualified to do so. 16. Do not defeat the safety purpose of the polarized or grounding‐type plug. A polarized plug has two blades with one wider than the other. A grounding‐type plug has two blades and a third grounding prong. The wide blade or the third prong is provided for your safety.
Regulatory Notices IMPORTANT SAFETY NOTICE This unit complies with safety standard EN60065 as appropriate. The unit shall not be exposed to dripping or splashing and no objects filled with liquids, such as coffee cups, shall be placed on the equipment. To ensure safe operation and to guard against potential shock hazard or risk of fire, the following must be observed: o Ensure that your mains supply is in the correct range for the input power requirement of the unit.
Table of Contents Chapter 1 Introduction .................................................................................................. 1 Chapter 2 Using the Professional Reference Monitor 2.1 Installing the PRM-4220 .....................................................................................................5 2.2 Remote Control Basics .......................................................................................................9 2.2.1 Display Control Section...........................
Table of Contents Appendix B Dolby PRM-4220 Specifications ............................................................ 53 Appendix C Frequently Asked Questions ................................................................ 57 Appendix D Navigating the System ........................................................................... 59 Appendix E PRM-4220 Patents and Open-Source Software.................................... 61 E.1 PRM-4220 Patents .........................................................
List of Figures Figure 1-1 Figure 1-2 Figure 1-3 Figure 1-4 Figure 1-5 Figure 2-1 Figure 2-2 Figure 2-3 Figure 2-4 Figure 2-5 Figure 2-6 Figure 2-7 Figure 2-8 Figure 2-9 Figure 2-10 Figure 2-11 Figure 2-12 Figure 2-13 Figure 2-14 Figure 2-15 Figure 2-16 Figure 2-17 Figure 2-18 Figure 2-19 Figure 2-20 Figure 2-21 Figure 2-22 Figure 2-23 Figure 2-24 Figure 2-25 Figure 2-26 Figure 2-27 Figure 2-28 Figure 2-29 Figure 2-30 Figure 2-31 Figure 2-32 Figure 2-33 Figure 2-34 Figure 2-35 Figure 2-36 Figure 2-37 Figur
List of Figures Figure 2-44 Figure 2-45 Figure 2-46 Figure 2-47 Figure 2-48 Figure 2-49 Figure 2-50 Figure 2-51 Figure 2-52 Figure 2-53 Figure 2-54 Figure 2-55 Figure 2-56 Figure 2-57 Figure 2-58 Figure 2-59 Figure 2-60 Figure 2-61 Figure 2-62 Figure 2-63 Figure 2-64 Figure 2-65 Figure 2-66 Figure 2-67 Figure 2-68 Figure 2-69 Figure 2-70 Figure 2-71 Figure 2-72 Figure 2-73 Figure 2-74 Figure 2-75 Figure A-1 Figure B-1 Figure D-1 x System/Calibration/Reset/Factory Reset Screen ............................
Chapter 1 Introduction Welcome to Dolby® professional video! The Dolby Professional Reference Monitor (PRM‐4220) is designed for the postproduction, film, and television broadcast industries. The PRM‐4220 has a resolution of 1,920 × 1,080 pixels and a refresh rate of 120 Hz, utilizing Dolby Laboratories’ dual‐modulation RGB backlight technology.
Introduction Figure 1‐2 Input/output connectors (see close up in Figure 1-3) Filter door Power switch Power port Figure 1-2 PRM-4220 Rear Panel Figure 1‐3 Audio sync out DisplayPort in DVI in SDI A & B in A Figure 1-3 2 SDI A & B out HDMI in To Remote Control (Ethernet) To external network (Ethernet) PRM-4220 Rear-Panel Connectors (Enlarged and Labeled) Dolby® Professional Reference Monitor Manual
Introduction You operate the PRM‐4220 using the Dolby Remote Control. You can use the Remote on the desktop or mounted in a standard 19‐inch equipment rack. For complete details on the Remote, see Chapter 2.
Chapter 2 Using the Professional Reference Monitor This chapter explains how to use the Dolby® PRM‐4220. 2.1 Installing the PRM-4220 To install the Dolby PRM‐4220: 1. Position the PRM‐4220 in a well‐ventilated area, at a minimum of 12 inches from a side wall and 12 inches from a rear wall. In addition, if you install the PRM‐4220 in any type of enclosure, air should flow into the enclosure at a minimum of 200 cubic feet per minute with air at 25°C (77°F).
Using the Professional Reference Monitor 2. Connect your required inputs and outputs on the PRM‐4220 rear panel, as shown in Figure 2‐2. Figure 2‐2 DisplayPort in Audio sync out DVI in SDI A & B out SDI A & B in A Figure 2-2 HDMI in To Remote Control (Ethernet) To external network (Ethernet) Connect Inputs and Outputs Use the SDI A input for single‐link formats. Use the SDI A and B inputs for dual‐link formats. Note: 3.
Installing the PRM-4220 4. Connect the PRM‐4220 power cable to an AC power source, then press the power switch to turn on the monitor, as shown in Figure 2‐4. Figure 2‐4 Press power switch Connect AC power Figure 2-4 Connect AC Power and Turn On Monitor While the Remote is booting, the Dolby logo appears on its user display, and then a message indicates that it is searching for a connected monitor, as shown in Figure 2‐5.
Using the Professional Reference Monitor When the Remote recognizes the PRM‐4220, the Dolby logo appears, and then the Reference Mode Status 1 screen appears, as shown in Figure 2‐6 for an HD‐SDI single‐ link input.
Remote Control Basics 2.2 Remote Control Basics The Remote is designed for use on a desktop or in a standard 19‐inch equipment rack. (Screw holes are provided on each side of the Remote for rack installations.) You can access the most frequently used functions through front‐panel buttons, and additional functions are accessible in menus that appear on the user display.
Using the Professional Reference Monitor Cal This red LED: Table 2-1 • Illuminates when you change the default brightness, contrast, or RGB gain calibration settings. • Turns off when you restore the default calibration settings manually (see Manual Calibration) or automatically (see Factory Reset). To restore only the brightness and contrast defaults, press ENTER when a dialog appears during the brightness and contrast adjustment process.
Remote Control Basics Markers Off This blue LED: Table 2-3 Illuminates when all of the onscreen markers are deactivated. • Turns off when one of the three onscreen markers is activated. Markers Off Key Descriptions Key CURSOR • Function Shows pixel cursor on the PRM‐4220 screen when enabled Illumination Notes Yellow when enabled, turns The Pixel Cursor screen appears on the off when disabled Remote, as shown in the example in Figure 2‐10.
Using the Professional Reference Monitor Display Mode Keys Following is a description of the display mode keys. Reference Mode and Dynamic Mode Keys The Reference (REF) and Dynamic modes provide highly accurate colorimetry and gray‐scale performance. They allow a user to modify display‐related parameters only (brightness, contrast, and maximum luminance), and to toggle between two groups of display‐related settings. We created these modes for the colorist, as the main work areas.
Remote Control Basics Operating Mode Keys The operating modes provide access to the PRM‐4220 settings. Following is a description of the operating mode keys: EDIT This mode allows you to edit Reference mode, Dynamic mode, user‐loaded 3D LUT (Custom 1 and 2) mode, and LCD and PDP emulation mode parameters, as described in Section 2.3. SYSTEM This mode allows you to access and configure the PRM‐4220 global settings (those settings that are not accessible using the EDIT key).
Using the Professional Reference Monitor 2.2.5 Numerical Keys Figure 2‐13 Figure 2-13 Numerical Keypad You use the numerical keys to enter values in the Remote data entry fields. You can use the backspace key in the lower‐left corner to delete characters from right to left. Using the Numerical Keys to Save Custom Presets You can also use the numerical keys to save and load custom presets, as described in Section 2.5. Each preset saves the current state of all PRM‐4220 parameters.
Editing the Display Mode Parameters 2.2.8 USB Ports The Remote has three USB 2.0 compliant ports. Two are located on the left side of the Remote front panel (oriented vertically), and one is located on the right side panel. The USB ports are provided to connect memory devices. You can insert USB memory devices to save 1D and 3D LUTs (to the PRM‐4220, not on the Remote), to save user‐defined presets, and to upgrade the system. 2.2.
Using the Professional Reference Monitor 2.3.1 Editing the Reference Mode Parameters To edit the Reference mode parameters: 1. Press the REF MODE key, then press the STATUS key. The Reference Mode Status 1 screen displays the current input and output formats, as shown in Figure 2‐14. Figure 2‐14 Figure 2-14 Reference Mode Status Screen 2. Press the EDIT key, as shown in Figure 2‐15.
Editing the Display Mode Parameters 3. To change a current setting, press the up/down arrow keys to highlight the desired parameter, and then press ENTER. If you select Custom, the Custom Video Range screen appears, as shown in Figure 2‐17. Figure 2‐17 Figure 2-17 Custom Video Range Screen In this screen, you can enter the desired video range settings by using the arrow keys to select each field and pressing ENTER to activate the field.
Using the Professional Reference Monitor 5. Press the down arrow key to activate the tab menu, then press the right arrow key (or the EDIT key). The Reference Mode: Brightness screen appears with a slider display, which indicates the current brightness setting, as shown in Figure 2‐19. Figure 2‐19 Figure 2-19 Reference Mode: Brightness Screen 6. To change the current brightness setting: • If the B/C LOCK (third key below CAL) is illuminated, press this key to unlock the brightness control.
Editing the Display Mode Parameters When you change the default contrast setting, the LED next to its rotary control knob illuminates in blue. 9. Press the right arrow key (or the EDIT key). The Reference Mode: Max Luminance screen appears. In this screen, you can change the maximum luminance value for the PRM‐4220, as shown in Figure 2‐21. Figure 2‐21 Figure 2-21 Reference Mode: Maximum Luminance Screen 10.
Using the Professional Reference Monitor Dynamic Mode Input Format, SDI Input, Video Range, Brightness, and Contrast When you press the EDIT key, these Dynamic mode parameters and their respective screens are almost identical to those in the Reference mode (described in Section 2.3.1). The one exception is the maximum luminance, as described next. Dynamic Mode Maximum Luminance The Dynamic mode maximum peak luminance (600 cd/m2) is greater than in Reference mode (120 cd/m2).
Editing the Display Mode Parameters 2.3.3 Editing the LCD, PDP, and Custom Parameters These modes are defined as follows: • LCD mode uses a factory supplied 3D LUT that is representative of consumer LCDs. • PDP mode uses a factory supplied 3D LUT that is representative of consumer plasma displays. • Custom 1 and Custom 2 modes use custom 3D LUTs to provide user‐specific display properties. For information on loading custom LUTs, see Load LUTs. The parameters for all of these modes are identical.
Using the Professional Reference Monitor 2.4 Configuring the System Parameters You configure the PRM‐4220 system parameters using the Remote. The system parameters apply to global operations and functions. Most of these parameters apply to the entire monitor system. However, some of the system parameters apply only to Reference mode or Dynamic mode. 2.4.1 Configuring the Primaries To configure these parameters: 1.
Configuring the System Parameters 2. Use the arrow keys, and press ENTER to activate a field, then use the arrow keys or the keypad to change a setting, and press ENTER again to save. When using the arrow keys: • A single up‐arrow key press increases the current value by 0.0001. • A single down‐arrow key press decreases the current value by 0.0001. • Pressing and holding the up arrow for more than 1.5 seconds increases values continuously by 0.001.
Using the Professional Reference Monitor 2.4.2 Configuring the White Point To configure this parameter: 1. Press the SYSTEM key to activate the tab menu, then use the arrow keys (or the SYSTEM key) to move to the White Point tab. The White Point screen appears. Figure 2‐28 Figure 2-28 System/White Point Screen The white point sets the chromaticity of white for the RGB and YCbCr inputs. You can change the current setting by pressing the up and down arrow keys, and then pressing the ENTER key.
Configuring the System Parameters 2.4.3 Configuring the Gamma To configure this parameter: 1. Press the SYSTEM key to activate the tab menu, then use the arrow keys (or the SYSTEM key) to move to the Gamma/LUTs tab. The Gamma screen appears, with Pure Gamma and Custom LUT parameters, as shown in Figure 2‐30. Note: The Gamma/LUTs tab is inaccessible when an emulation mode or a user‐loaded 3D LUT mode is active. In such cases, the gamma is absolute.
Using the Professional Reference Monitor 2. 2.4.4 Use the arrow keys or the numeric keypad to change the setting, and press ENTER again to save. When using the arrow keys: • A single up‐arrow key press increases the current value by 0.01. • A single down‐arrow key press decreases the current value by 0.01. • Pressing and holding the up arrow for more than 1.5 seconds increases values continuously by 0.1. The maximum value is 3. • Pressing and holding the down arrow for more than 1.
Configuring the System Parameters 2.4.5 Configuring the HD-SDI Link Format To configure this parameter, press the SYSTEM key to activate the tab menu, then use the arrow keys (or the SYSTEM key) to move to the Format tab. The HD-SDI Link Format screen appears, as shown in Figure 2‐33. Figure 2‐33 Figure 2-33 System/HD-SDI Link Format Screen In this screen, you can specify the input format if HD-SDI Detection is set to Manual.
Using the Professional Reference Monitor 2.4.6 Configuring Aspect Ratio and Scaling To configure these parameters, press the SYSTEM key to activate the tab menu, then use the arrow keys (or the SYSTEM key) to move to the Aspect/Scaling tab. The Aspect Ratio and Scaling screen appears, as shown in Figure 2‐34. Figure 2‐34 Figure 2-34 Aspect Ratio and Scaling Screen You can change the current Aspect Ratio and Scaling settings by pressing the arrow keys, and then pressing the ENTER key.
Configuring the System Parameters 2.4.7 Configuring the Action and Title Safe Area Markers To configure these parameters, press the SYSTEM key to activate the tab menu, then use the arrow keys (or the SYSTEM key) to move to the Safe Markers tab. The Action/Title Safe Area Markers screen appears, as shown in Figure 2‐35.
Using the Professional Reference Monitor 2.4.8 Configuring the Marker Mask To configure these parameters, press the SYSTEM key to activate the tab menu, then use the arrow keys (or the SYSTEM key) to move to the Mask tab. The Marker Mask screen appears, as shown in Figure 2‐37. In this screen, you can shade regions outside the selected marker and define the opacity for the shading. Figure 2‐37 Figure 2-37 Marker Mask Screen 2.4.
Configuring the System Parameters Deinterlacing options: • Deinterlace converts interlaced video to progressive output using a motion‐adaptive deinterlacer. This process utilizes motion‐detection intelligence to adapt field combination with spatial filtering at the pixel level, which minimizes the undesirable side effects of traditional deinterlacers. • Direct Deinterlace converts interlaced video to progressive output using black‐line insertion.
Using the Professional Reference Monitor • Each time you press the right arrow key to increase a value or the left arrow key to decrease a value, the marker moves in one‐pixel increments. • When you press and hold an arrow key for 1.5 seconds, the marker moves ten pixels. As you move the slider, the screen image responds in real time. The Pixel to Pixel slider position determines which pixels the system conceals from each line. 4. 2.4.11 Press ENTER to save your settings.
Configuring the System Parameters 2.4.12 Configuring the Remote Settings You use these settings to specify the LED and LCD brightness for the Remote Control (not the PRM‐4220). To configure these parameters: 1. Press the SYSTEM key to activate the tab menu, then use the arrow keys (or the SYSTEM key) to move to the Remote tab. The Remote Settings screen appears, as shown in Figure 2‐41.
Using the Professional Reference Monitor 2.4.13 Configuring the Calibration Reset To configure these parameters: 1. Press the SYSTEM key to activate the tab menu, then use the arrow keys (or the SYSTEM key) to move to the Calibration tab. The Calibration/Reset screen appears, as shown in Figure 2‐42. You can select a calibration option by pressing the arrow keys, and then pressing the ENTER key.
Configuring the System Parameters Factory Reset When you select this option, a confirmation prompt appears, as shown in Figure 2‐44. Select OK to reset the PRM‐4220 to its original factory settings or Cancel to retain the current settings, then press ENTER. Figure 2‐44 Figure 2-44 System/Calibration/Reset/Factory Reset Screen Note: 2.4.14 To maintain optimal performance, we recommend that you have your PRM‐4220 calibrated once each year by a Dolby technician.
Using the Professional Reference Monitor About Monitor When you select this option, the About this PRM-4220 screen appears, as shown in Figure 2‐46. This screen displays the PRM‐4220 serial number and the system software, which is the same for the monitor and the Remote. Figure 2‐46 Figure 2-46 System/Utilities/About This PRM-4220 Screen System Status When you select this option, the System Status screen appears.
Configuring the System Parameters Software Upgrade You can upgrade or downgrade the system software on the Remote and the monitor at the same time or you can upgrade or downgrade a stand‐alone Remote that is not connected to a monitor. Before you begin the upgrade: • Be sure the unit is on stable power. • Save a preset settings backup file. • Follow the correct upgrade path from the installed software version to the updated software. Not doing so can result in Remote connection errors.
Using the Professional Reference Monitor 4. Press ENTER to display the files on the USB device, then use the arrow keys to select the upgrade file, as shown in Figure 2‐50. Figure 2‐50 Figure 2-50 Select a File to Load Screen 5. Press ENTER. A confirmation prompt appears, as shown in Figure 2‐51. Figure 2‐51 Figure 2-51 Software Upgrade Confirmation Screen 6. Use the arrow keys to select Yes, then press ENTER. The system begins the software upgrade.
Configuring the System Parameters The system can take up to two minutes to reboot the monitor. As the monitor is rebooting, the Remote screen fades and turns off, and then the Dolby logo appears on the screen. The Remote searches, and once communication is established with the monitor, the REF MODE status screen appears. 7. Select System > Utilities > About Monitor to confirm that the updated software is installed on both the Remote and the monitor.
Using the Professional Reference Monitor IP Configuration When you select this option, the Monitor IP Configuration screen appears, as shown in Figure 2‐55. In this screen, you can configure the PRM‐4220 Ethernet port. Note: This network setup applies only to the network connection for the PRM‐4220, and not its dedicated Ethernet connection to the Remote.
Configuring the System Parameters Figure 2‐57 Figure 2-57 System/Utilities/Load Settings/Select a File to Load Save Settings You can save your current system settings on a USB device, which you can use as a backup or load onto another PRM‐4220 (see Load Settings). Following is a description of this procedure. 1. Insert a USB device into one of the Remote USB ports. 2. Select System > Utilities > Save Settings. The Save Settings screen appears, as shown in Figure 2‐58.
Using the Professional Reference Monitor The Save Settings keypad appears, where you can name your settings, as shown in Figure 2‐60. Figure 2‐60 Figure 2-60 Save Settings Keypad 4. Use the Remote arrow keys and ENTER key to name your settings, select Done, and then press ENTER again to save the settings on the USB device. Settings files have a .prm file extension. Load LUTs You can load 3D LUTs and 1D LUTs on the PRM‐4220. Following is a description of each of these procedures.
Configuring the System Parameters Figure 2‐62 Figure 2-62 Select a File to Load Screen 4. Press ENTER. The Select where to load screen appears, as shown in Figure 2‐63. In this screen, you can load the desired 3D LUT into the Custom 1 or Custom 2 emulation mode. Figure 2‐63 Figure 2-63 Select Where to Load Screen 5. Use the up/down arrow keys to load the 3D LUT into Custom 1 or Custom 2, then press ENTER. A confirmation prompt appears, as shown in Figure 2‐64.
Using the Professional Reference Monitor Loading a 1D LUT The PRM‐4220 uses .dd1 1D LUT files. The .dd1 LUT format is a custom high‐resolution binary format created by Dolby Laboratories. For information on obtaining and creating 1D LUTs, contact Dolby Laboratories. The system also supports industry standard .csv Nucoda format 1D LUTs. To load a 1D LUT: 1. 2. Insert a USB device (containing the desired 1D LUT) into one of the Remote USB ports. Select System > Utilities > Load LUTs.
Configuring the System Parameters 4. Press ENTER. The Select where to load screen appears, as shown in Figure 2‐67. In this screen, you can load the desired 1D LUT into LUT A, LUT B, LUT C, or LUT D, which are accessible in the Gamma/LUTs screen (described previously in Section 2.4.3). Figure 2‐67 Figure 2-67 Select Where to Load Screen 5. Use the up/down arrow keys to load the 1D LUT into the desired location, then press ENTER. A confirmation prompt appears, as shown in Figure 2‐68.
Using the Professional Reference Monitor Lock/Unlock Monitor To lock the monitor: 1. Select System > Utilities > Lock/Unlock Monitor. 2. Enter a four‐digit code in the displayed data entry field using the Remote numerical keys, then press ENTER (see Figure 2‐68). 3. To unlock the monitor, follow the previous steps and enter the same code. Figure 2‐70 Figure 2-70 Lock Monitor Screen 2.4.15 System Menus Table 2‐5 lists all of the system parameter screens and their displayed menu options.
Configuring the System Parameters Table 2-5 System Parameters (continued) System Screen On‐Screen Display Parameters Timecode (On, Off) H/V Display (On, Off) Marker Color (White, Lumamod) 4:3 Markers On/Off Remote Settings Adjustable horizontal slider Normal, Dimmed (LED brightness, LCD brightness) Calibration/Reset Adjustable horizontal sliders Manual Color Calibration (screen) Utilities Factory Reset (dialog box) About Monitor (dialog box) System Status (dialog box) Software Upgrade (dialog bo
Using the Professional Reference Monitor 2.5 Saving and Loading Custom Presets You can use the Remote numerical keys to save and load your current settings as custom presets. Ten presets are provided, one for each numerical key (0 through 9). Each preset saves the current state of all PRM‐4220 parameters. In addition, when you save a preset, it stores information for an active LUT. Note: 1. You cannot save or load a preset while a data entry field is active.
Saving and Loading Custom Presets When you load a preset, its numerical key and name appear in the Status1 screen instead of the respective display mode (for example, for preset 1 [P1:Preset 1ac], as shown in Figure 2‐74). Figure 2‐74 Figure 2-74 Preset Displayed in Status1 Screen If you load a preset and then change any image settings, an asterisk appears next to the preset name in the Status1 screen. This indicates that the currently loaded preset was modified.
Appendix A PRM-4220 Maintenance This chapter describes some basic maintenance procedures for the Dolby® PRM‐4220. A.1 Replacing the Filter Your PRM‐4220 has an air filter installed that you need to check periodically. When the filter contains an excessive amount of dust, you need to replace it. We recommend that you replace the filter at least every 90 days. Depending on your environment, you may need to replace the filter more often.
PRM-4220 Maintenance A.1.2 Filter Replacement Instructions To replace the PRM‐4220 filter (refer to Figure A‐1): 1. Use a Phillips screwdriver to remove the four retaining screws at the top and bottom of the filter door, which is located on the PRM‐4220 rear panel. 2. Using both hands, lean the filter door out on a slight angle, then remove the filter door, remove the filter, and replace it with the new filter. 3.
Appendix B Dolby PRM-4220 Specifications HD-SDI and Dual-Link HD-SDI Video Support Single‐link HD‐SDI bit depths and color schemes: 1.5G 10 bits per component YCbCr 4:2:2 Dual‐link HD‐SDI bit depths and color schemes: 10 bits per component 4:4:4 RGB, 4:4:4:4, YCbCr, and 4:4:4 XYZ 12 bits per component 4:4:4 RGB, 4:4:4 YCbCr, 4:2:2 YCbCr, and 4:4:4 XYZ 1,080‐line formats supported in both 1,920 × 1,080 and 2,048 × 1,080 HD‐SDI and dual‐link HD‐SDI video formats: 720/60p 720/59.
Dolby PRM-4220 Specifications SD-SDI Video Support Single‐link SD‐SDI bit depths and color schemes: 10 bits per component YCbCr 4:2:2 SD‐SDI video formats: 480/59.94i (SD SDI NTSC) 575/50i (SD SDI PAL) HDMI and DisplayPort Video Support HDMI™ and DisplayPort bit depths and color schemes: 8/10/12** bits per component, YCbCr 4:2:2*, YCbCr 4:4:4, RGB 4:4:4 *YCbCr 4:2:2 and interlaced modes not supported by DisplayPort. **1080/60p in 12 bits per component not supported by HDMI.
Dolby PRM-4220 Specifications White Point D54, D60, D65, D93, D‐cinema, Custom Gamma 2.2, 2.4, 2.6, custom Power Consumption 1,000 volt‐amperes maximum (15 amp minimum breaker size) Line Voltage Compatibility 85–260 VAC, 50–60 Hz Operating Temperature 0°C to 35°C Optimum 25°C, ±5°C Storage Temperature –20°C to 70°C Humidity 30% to 90% relative humidity, noncondensing Remote Controller Dimensions 2‐U rackmount or tabletop use Weight 107 pounds (48.
PRM-4220 Specifications Figure B‐1 Figure B-1 PRM-4220 Dimensions (Millimeters) Dolby® Professional Reference Monitor Manual 56
Appendix C Frequently Asked Questions This appendix provides answers to frequently asked questions regarding the Dolby® Professional Reference Monitor (PRM‐4220). My CRT has a bias control. Why is there no bias control on the PRM-4220? CRTs are analog devices, which require both gain and bias controls, as they are sensitive to small voltage offsets in the signal path. Typically, you adjust the gain control first to set the white point, and then set the bias control to adjust the black point.
Frequently Asked Questions Using the Remote, I cannot select the SDI B Link input, but I connected an HD-SDI input to the SDI B input port. Link B is active only when link A also has a valid input. Use link A for all single‐link input operations. When I start up the PRM-4220, the Remote freezes at the “Searching for Monitor” screen. Be sure the Remote Ethernet cable is connected firmly to both the Remote and the PRM‐4220 REMOTE port.
Appendix D Navigating the System Figure D‐1 provides a PRM‐4220 navigation tree.
Appendix E PRM-4220 Patents and Open-Source Software This appendix lists all of the Dolby® PRM‐4220 patents and the open‐source software attribution. E.1 PRM-4220 Patents Following is a list of the United States patents. 7,413,307 7,419,267 7,377,652 7,581,837 7,172,297 6,891,672 7,731,367 7,801,426 7,753,530 7,370,979 7,800,822 7,777,945 7,403,332 7,551,341 Worldwide patents are granted and pending.
PRM-4220 Patents and Open-Source Software E.2 PRM-4220 Open-Source Software Attribution The following table lists the open‐source software used in the production of the PRM‐4220. Table E-1 Package PRM-4220 Open Source Software Home Page License http://apr.apache.org/ http://www.apache.org/licenses/LICENSE-2.0 avahi http://avahi.org/ http://www.gnu.org/licenses/lgpl.html bash http://www.gnu.org/software/bash/ http://www.gnu.org/licenses/gpl.html boost http://www.boost.org http://www.boost.
PRM-4220 Open-Source Software Attribution Table E-1 PRM-4220 Open Source Software (continued) Package Home Page License http://www.tcpdump.org/ http://opensource.org/licenses/BSD-3-Clause libtiff http://www.libtiff.org/ http://www.libtiff.org/misc.html libusb http://www.libusb.org/ http://www.gnu.org/licenses/old-licenses/lgpl-2 .1.html linux https://www.kernel.org/ https://www.kernel.org/pub/linux/kernel/COPYI NG lzo http://www.oberhumer.com/opensource/l zo/ http://www.oberhumer.
Index 2k image position pixel to pixel ........................................................... 31 action and title safe area markers .......................... 29 aspect ratio and scaling ........................................... 28 brightness dynamic mode........................................................ 20 emulation and custom modes .............................. 21 reference mode ................................................. 17, 18 brightness and contrast knobs...........................
Index replacing the filter .................................................... 51 scaling aspect ratio .............................................................. 28 full screen ................................................................ 28 integer ...................................................................... 28 overscan................................................................... 28 pixel for pixel.......................................................... 28 underscan..............
