Rad-87 ™ Pulse CO-Oximeter O P E R AT O R ’ S M A N U A L
Rad-87 ™ Pulse CO-Oximeter OPERATOR’S MANUAL
The Rad-87 Operating Instructions provide the necessary information for proper operation of all models of the Rad-87 device. General knowledge of pulse CO-Oximetry and an understanding of the features and functions of the Rad-87 are a prerequisite for its proper use. Do not operate the Rad-87 without completely reading and understanding the instructions in this manual.
SAFETY INFORMATION, WARNINGS, CAUTIONS AND NOTES The Rad-87 Pulse CO-Oximeter is designed to minimize the possibility of hazards from errors in the software program by following sound engineering design processes, Risk Analysis and Software Validation. ■ Explosion hazard. Do not use the Rad-87 in the presence of flammable anesthetics or other flammable substance in combination with air, oxygen-enriched environments, or nitrous oxide.
SAFETY INFORMATION, WARNINGS, CAUTIONS AND NOTES (CONTINUED) ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Very low arterial Oxygen Saturation (SpO2) levels may cause inaccurate SpCO and SpMet measurements. Severe anemia may cause erroneous SpO2 readings. Hemoglobin synthesis disorders may cause erroneous SpHb readings. Do not use the Rad-87 or sensors during magnetic resonance imaging (MRI) scanning. Induced current could potentially cause burns.
SAFETY INFORMATION, WARNINGS, CAUTIONS AND NOTES (CONTINUED) ■ This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to other devices in the vicinity. However, there is no guarantee that interference will not occur in a particular installation.
table of contents SECTION 1 - OVERVIEW About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Warnings, Cautions and Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
table of contents SECTION 4 - OPERATION (CONTINUED) Numeric Display - SpOC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6 Numeric Display - PI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6 Pleth Variability Index (PVI). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7 Low Perfusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
table of contents SECTION 4 - OPERATION - (CONTINUED) Interface Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-29 System Interfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-29 Philips VueLink Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-29 Radnet Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
table of contents SECTION 8 - SENSORS & PATIENT CABLES Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1 Selecting a Masimo SET Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1 Sensor Application Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1 Masimo Rainbow Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
overview 1 About This Manual This manual explains how to set up and use the Rad-87 Pulse CO-Oximeter containing Masimo Rainbow SET technology. Important safety information relating to general use of the Rad-87 appears before this introduction. Other important safety information is located throughout the manual where appropriate. Read the entire safety information section before you operate the monitor.
1 overview Warnings, Cautions and Notes Please read and follow any warnings, cautions and notes presented throughout this manual. An explanation of these labels are as follows: A WARNING is provided when actions may result in a serious outcome (i.e., injury, serious adverse affect, death) to the patient or user. Look for text in a gray shaded box. Sample of Warning: WARNING: THIS IS A SAMPLE OF A WARNING STATEMENT.
overview 1 Product Description The Rad-87 Pulse CO-Oximeter Monitor is a noninvasive, arterial oxygen, carboxyhemoglobin and methemoglobin saturation, total hemoglobin concentration, total arterial oxygen content and pulse rate monitor. The Rad-87 features a multicolored LED display that continuously displays numeric values for SpO2, SpCO®*, SpMet™*, SpHb™*, total arterial oxygen content (SpOC*), perfusion index (PI), pleth variability index* (PVI) and pulse rate.
1 overview INDICATIONS FOR USE The Rad-87 Pulse CO-Oximeter and accessories are indicated for the continuous, non-invasive monitoring of functional oxygen saturation of arterial hemoglobin (SpO2), carboxyhemoglobin and methemoglobin concentration expressed in percentage (SpCO and SpMet) and total hemoglobin concentration expressed in grams per deciliter (SpHb).
overview 1 Pulse CO-Oximetry is a continuous and noninvasive method of measuring the levels of total hemoglobin (SpHb) in arterial blood. It relies on the same principles of pulse oximetry to make the SpHb measurement. The measurement is taken by a sensor capable of measuring SpHb, usually on the fingertip for adults and pediatric patients. The sensor connects directly to the Pulse CO-Oximeter or with a patient cable. The sensor collects signal data from the patient and sends it to the instrument.
overview 1 PRINCIPLE OF OPERATION Pulse CO-Oximetry is governed by the following principles: 1. Oxyhemoglobin (oxygenated blood), deoxyhemoglobin (non-oxygenated blood), carboxyhemoglobin (blood with carbon monoxide content), methemoglobin (blood with oxidized hemoglobin) and blood plasma constituents differ in their absorption of visible and infrared light (using spectrophotometry, see figure below). Absorption Spectra 4.0 Carboxyhemoglobin 3.
overview 1 FUNCTIONAL SATURATION The Rad-87 is calibrated to measure and display functional saturation (SpO2): the amount of oxyhemoglobin expressed as a percentage of the hemoglobin that is available to transport oxygen. RAD-87 vs.
1 MASIMO RAINBOW SET PARALLEL ENGINES This figure is for conceptual purposes only.
system description 2 Introduction The Rad-87 Pulse CO-Oximeters are full featured devices designed for ease of operation. All pulse CO-Oximetry measurement information, as well as device status data, is displayed on the front panel of the device. All user input is handled by control buttons on the front panel. The sensor cable connections are located on the left side of the front panel for the Rad-87 horizontal device and the bottom of the front panel for the Rad-87 vertical device.
2 system description RAD-87 PULSE CO-OXIMETER - HORIZONTAL 1 2 4 3 5 6 7 8 9 10 11 DISPLAY DISPLAY NORM NORM NORM APOD APOD APOD MAX MAX MAX SENSITIVITY MODE SENSITIVITY SENSITIVITY 10.1 20 19 18 17 CONTROL / INDICATOR 2-2 1 Device Profile LED 2 Sensitivity Button/Indicator 3 LCD Display 16 15 ENTER ENTER Rad-87 Rad-87 rbc monitor 14 13 12 DESCRIPTION The Device Profile LED illuminates when the device has been set to user configured "default" settings.
system description CONTROL / INDICATOR 6 2 DESCRIPTION Off: No connection to Masimo Patient SafetyNet or other compatible interface system. Flashing Green: Rad-87 attempts to connect to Patient SafetyNet or other compatible interface system. Wireless Indicator Solid Green: Rad-87 is connected to the Patient SafetyNet or other compatible interface system. 7 Used to enter the alarm menu to adjust Hi/Low SpO2, SpCO, SpMet, SpHb, PI, PVI and pulse rate alarm limits.
2 system description CONTROL / INDICATOR 12 Enter Button Brightness 13 Button DESCRIPTION Used to enter the setup menus and to select/activate certain entries within the menu/setup system. Controls the level of the brightness for the LED display by providing 4 levels of brightness. Each press of the button increases the brightness one level. Once level 4 is accessed, an additional press of the button returns the brightness to level 1. Use these buttons to adjust the volume of the pulse beep tone.
system description 2 RAD-87 PULSE CO-OXIMETER - VERTICAL 11 9 10 8 8 8978 8 8768 810.
2 system description RAD-87 REAR PANEL 2 4 1 RS-232 P2 Made in USA 100-240v~50-60 Hz 15VA MAX Manufactured by: Masimo Corporation Irvine, CA 92618 USA 32294/4778A-1207 P1 Distributed by: Masimo Corporation Irvine, CA 92618 USA Rx Only Covered by one or more of the following U.S.
system description 2 SYMBOLS The following symbols are found on the Rad-87 or packaging and are defined below: RS-232 Equipotential Ground Terminal Consult accompanying documents Nurse Call Interface WEEE compliant Mark of Conformity to European Medical Device Directive 93/42/EEC Rx Only Federal law restricts this device to sale by or on the order of a physician (USA audiences only) Year of manufacture Storage humidity range: 5% to 95% 5%-95% RH +70 C -40 C +1060 hPa - +500 hPa 795 mmHg - 375 mmHg
2 system description LCD DISPLAY The LCD Display shows radio communication information when radio communication is active (wireless radio model only). It also shows system information. All Rad-87 models are equipped with a LCD display which is located on the top panel of a horizontal model, or on the left side panel of a vertical model. The LCD Display illuminates upon start up and displays the installed parameter/measurement's low and high alarm limits.
setup 3 Introduction Before the Rad-87 Pulse CO-Oximeter can be used in a clinical setting, it needs to be inspected, properly setup and the batteries need to be fully charged. Unpacking and inspection Remove the instrument from the shipping carton and examine it for signs of shipping damage. Check all materials against the packing list. Save all packing materials, invoice and bill of lading. These may be required to process a claim with the carrier.
3 setup INITIAL BATTERY CHARGING Before use, the Rad-87 battery needs to be fully charged. To charge the internal battery, connect the AC power cord to an AC outlet and to the Power Entry Module located on the back of the Rad-87. The AC Power Indicator illuminates. The AC Power Indicator will remain illuminated while the battery is charging. The Battery Charge Level Indicator will not be illuminated unless the device is operating on battery power.
operation 4 Introduction To operate the Rad-87 system effectively, the device must be set up correctly and the operator must: ■ Know how the Rad-87 derives its readings (see Section 1). ■ Be familiar with its controls, components and operation. ■ Understand its status and alarm messages (see Section 5, Alarm and Messages and Section 6, Troubleshooting). Basic operation GENERAL SETUP AND USE 1. Inspect the Rad-87 case for damage. 2. Connect a patient cable or a direct connect sensor to the Rad-87 device.
4 operation Basic operation continued 10. On the LED and the LCD displays, verify the alarm limit settings (see Setup Menu Level 1, Parameter/Measurement Alarm Limits - Screen 1, Parameter/Measurement Alarm Limits Screen 3 in this chapter). NOTE: The number "0" scrolls across the screen as the system calibrates and obtains patient data (approximately 20 seconds). 11. Verify that the patient alarms are functional by setting the high and low alarm limits beyond the patient readings.
operation 4 Basic operation continued 15. Verify the sensor is applied correctly and that the measured data is appropriate, see Section 4, Successful Monitoring. 16. Monitor the patient. 17. After monitoring is complete, remove the sensor from the patient and store or dispose of the sensor according to local laws. See the Directions for Use of the sensor. 18. Press and hold the Power Button for 2 seconds to turn the Rad-87 off [3 seconds in the Home Mode].
4 operation FACTORY DEFAULT AND USER CONFIGURABLE SETTINGS (CONTINUED) Nurse Call Type Alarm Nurse Call Polarity Line Frequency Averaging time SmartTone Normal 60 Hz 8 sec Off Alarm and Low Signal IQ/ Low Signal IQ/ Alarm Normal/Invert 60 Hz, 50 Hz 2, 4, 8, 10, 12, 14, 16 On/Off FastSat Off Setting is retained after power cycle.
operation 4 NUMERIC DISPLAY - SpO2 Stability of the SpO2 readings may be a good indicator of signal validity. Although stability is a relative term, experience will provide confidence in changes that are artifactual or physiological and the speed, timing, and behavior of each. The stability of the readings over time is affected by the averaging mode being used. The longer the averaging time, the more stable the readings tend to become.
4 operation NUMERIC DISPLAY - SpHb A stable SpHb reading is associated with correct sensor placement, small physiological changes during the measurement and acceptable levels of arterial perfusion at the measurement site. Physiological changes at the measurement site are mainly caused by fluctuations in the arterial oxygen saturation, blood concentration and perfusion. Inaccurate measurements may be caused by: ■ Intravascular dyes such as indocyanine green or methylene blue. ■ Low arterial perfusion.
operation 4 LOW PERFUSION The Rad-87 indicates perfusion on a 10-bar LED indicator. The lower two segments of the bar will turn red when the amplitude of the arterial pulsations is very low (low perfusion). It has been suggested that at extremely low perfusion levels, pulse oximeters can measure peripheral saturation, which may differ from central arterial saturation3.
4 operation SENSOR PLACEMENT If the SpO2, SpCO, SpMet or SpHb readings are questionable or unavailable, do the following: ■ Make sure the emitter and detector are aligned directly opposite each other. ■ Select a site where the distance between the emitter and detector is minimized. ■ Wipe the sensor site with a 70% isopropyl alcohol pad or rubefacient cream (10-30% methyl salicylate and 2-10% menthol) for 20-30 seconds to increase perfusion.
operation 4 LOW BATTERY AUDIBLE ALARM If a low battery condition occurs the audible alarm can be silenced until power cycle by pressing the Alarm Silence Button. Refer to Setup Menu Level 2 in this section to change setting. If a low battery condition occurs while not monitoring a patient, a low priority audible alarm will sound and can be silenced by pressing the Alarm Silence Button. The audible alarm is silenced until the power is cycled or patient monitoring begins.
4 operation Normal patient monitoring continued If SpMet and SpCO are/or not installed, the display will only move from Screen 1 to Screen 3 when the Display Button is pressed; Screen 2 will not show. By pressing the Display Button again, the display will move from Screen 3 to Screen 1. Display Screens with All Parameters and Measurements 76 10.1 Screen 1 Home display screen 13 10.1 1.60 20 3 Screen 2 Screen 3 %SpCO Display Screens when SpMet, SpCO and PVI Are Not Installed 76 10.
operation 4 PARAMETER/MEASUREMENT SELECTION The bottom field of any display screen may be configured to show SpHb or PVI (see Parameter Select menus). Once SpHb or PVI is configured to show on a screen different from the default location, the alarm limit menu for SpHb or PVI can be accessed from the new screen by pressing the Alarm Limits Button. Display Screens Showing PVI on Screen 1 76 3 Screen 1 Home display screen 13 10.1 Screen 2 1.
4 operation SETUP MENU This section gives an overview of the Rad-87 menu selections available. To access the menu levels and navigate through the menu selections, use the front panel buttons, Enter Button and Up/Down Buttons as indicated in the following sections. Sub-sections describe each menu item in more detail. The Rad-87 has options that allow user configuration to accommodate specific needs. MENU NAVIGATION The Rad-87 set-up and configuration options are accessed through the menu system.
operation 4 SETUP MENU LEVEL 1 (CONTINUED) PARAMETER/MEASUREMENT ALARM LIMITS - SCREEN 1 To access alarm limits for parameters/measurements contained on Screen 1, press the Alarm Limits Button to access the Alarm Limits menu for Screen 1 parameters/measurements. BUTTONS SETTINGS Press once %SpO2 LO Press 2x %SpO2 HI Use the Alarm Limits Button to access the alarm limits options and move between options.
4 operation SETUP MENU LEVEL 1 (CONTINUED) PARAMETER/MEASUREMENT ALARM LIMITS - SCREEN 2 To access alarm limits for parameters/measurements contained on Screen 2, press the Display Button to move from Screen 1 to Screen 2. From Screen 2, press the Alarm Limits Button to access the Alarm Limits menu for Screen 2 parameters/measurements. BUTTONS SETTINGS Press once PI LO Use the Alarm Limits Button to access the alarm limits options and move between options.
operation 4 PARAMETER/MEASUREMENT ALARM LIMITS - SCREEN 3 To access alarm limits for parameters/measurements contained on Screen 3, press the Display Button two times to move from Screen 1 to Screen 3. Press the Alarm Limits Button from Screen 3 to access the Alarm Limits menu for Screen 3 parameters/measurements. BUTTONS SETTINGS Press once %SpMet LO Use the Alarm Limits Button to access the alarm limits options and move between options.
4 operation SETUP MENU LEVEL 1 (CONTINUED) SENSITIVITY BUTTONS SETTING Press once Default APOD Use the Sensitivity Button to access the sensitivity options and move between options. Press 2x Use the Sensitivity Button to move between menu options and accept the setting. NORM Press 3x MAX (The MAX Indicator flashes in this mode.) SETUP MENU LEVEL 2 Level 2 menu contains parameters and settings that are not changed as frequently as Level 1.
operation 4 SETUP MENU LEVEL 2 (CONTINUED) ALARM SILENCE BUTTONS SETTINGS Default 120 seconds Press the Enter Button again to move to the next menu. 90 seconds Use Up or Down Button to move between settings and the Enter Button to accept the setting and move to the next menu screen. OR 60 seconds 2x press the Display Button to exit without saving the new setting and to return to the home display screen.
4 operation SETUP MENU LEVEL 2 (CONTINUED) CLEAR TREND The Rad-87 only stores data in the trend memory while the device is turned on. Trend data saves to the memory until the memory is full or cleared by the user. NOTE: It is recommended that you clear the trend prior to performing a new patient data collection procedure. BUTTON SETTING Press the Enter Button again to move to the next menu.
4 operation SETUP MENU LEVEL 2 (CONTINUED) FASTSAT BUTTON SETTING Default Press the Enter Button again to move to the next menu. Off Use Up or Down Button to move between settings and the Enter Button to accept the setting and move to the Alarm Volume menu. OR 6x On press the Display Button to exit without saving the new setting and to return to the home display screen. Trend setup and use INTRODUCTION The Rad-87 can store up to 72 hours of trend data captured at 2 second intervals.
4 operation Trend setup and use continued 9. The Rad-87 will display “dat out” while trend data is being transferred. A progress bar will advance to indicate the status of the download. Larger trend files will take longer to download. Transfer time is approximately 20 seconds per hour of trend data. NOTE: During download of trend information, all normal Rad-87 functions are unavailable and the keypad is locked, except for the power button.
4 operation TREND DATA FORMAT (CONTINUED) PARAMETER SPECIFICATION Date MM\DD\YY Time HH:MM:SS Installed Parameter/ Measurement Numeric value (see the display ranges in the Factory and User Configurable Default Settings table located at the beginning of this section) Exception Messages The exceptions are displayed as a 3 digit, ASCII encoded, hexadecimal value.
4 operation SETUP MENU LEVEL 3 ENTER BUTTON + DOWN BUTTON MENU SETTINGS The Level 3 menu contains advanced parameter/measurement settings. To access Level 3 parameters/measurements, hold down the Enter Button and press the Down Button for 5 seconds. After entering menu Level 3, use the Enter Button to save new settings and move to the next menu. The user may cycle through the menu options by continuing to press the Enter Button.
4 operation SETUP MENU LEVEL 3 (CONTINUED) RAPID DESAT LIMIT The Rapid Desat Limit is designed to detect rapid desaturations of 5% or 10% below the low alarm limit and overrides the Alarm Delay feature when activated. BUTTONS SETTING Default Press the Enter Button again to move to the next menu. Use Up or Down Button to move between settings 5% AND press the Enter Button to accept the setting and move to the next menu.
4 operation SETUP MENU LEVEL 3 (CONTINUED) DEFAULT SETTINGS BUTTONS SETTING No change (Do not adjust factory default settings.) Press the Enter Button again to move to the next menu. Use Up or Down Button to move between settings AND User Default (Set to user settings.*) Factory Default (Restore factory default settings.) Set Device Profile press the Enter Button to accept the setting and move to the next menu.
operation 4 Device Profile Setup and Use The Rad-87 can be configured to save changes to the device settings as a Device Profile. Using the Rad-87 button menu or an external configuration application, users can adjust Rad-87 settings and parameter/measurement alarm limits. After changing settings, the user may save the settings as a Device Profile. This Device Profile becomes the new default settings and the saved (Device Profile) settings will be retained after a power cycle.
4 operation SETUP MENU LEVEL 3 (CONTINUED) PVI BAR ON/OFF (IF AVAILABLE) BUTTONS SETTING Default Press the Enter Button again to move to the next menu. On Use Up or Down Button to move between settings AND Off (No PVI Bar or parameter/ measurement label displayed) press the Enter Button to accept the setting and move to the next menu. OR press the Display Button to exit without saving the new setting and to return to the home display screen.
operation 4 SETUP MENU LEVEL 3 (CONTINUED) MONTH BUTTONS SETTING Default Press the Enter Button again to move to the next menu Month Use Up or Down Button to adjust the setting. Use Up or Down Button to move between settings AND press the Enter Button to accept the setting and move to the next menu. OR press the Display Button to exit without saving the new setting and to return to the home display screen. DAY BUTTONS SETTING Default Press the Enter Button again to move to the next menu.
4 operation SETUP MENU LEVEL 3 (CONTINUED) MINUTE BUTTONS SETTING Use Up or Down Button to move between settings Default Press the Enter Button again to move to the next menu. AND 30 minutes press the Enter Button to accept the setting and move to the next menu. OR Use Up or Down Button to adjust the setting. press the Display Button to exit without saving the new setting and to return to the home display screen.
4 operation SETUP MENU LEVEL 3 (CONTINUED) INTERFACE ALARMS When Rad-87 is interfaced to another system and the Interface Alarms are set to "Off", SpO2 and BPM audible alarms are muted at the Rad-87 and active at the interfaced system. This prevents both systems from producing SpO2 and BPM audible alarms at the same time. NOTE: The Rad-87 reverts to Interface Alarms "On" during power interruptions or when the interface connection is lost.
4 operation SETUP MENU LEVEL 3 (CONTINUED) RADNET SETUP 1. Connect one end of the serial cable to the Serial Output connector on the back of the Rad-87. 2. Connect the other end of the serial cable to the RadNet Interface Module connector. 3. Turn the RadNet Interface Module on. 4. Select the ASCII 2 selection from the Serial options on the Rad-87. 5. A proper connection is shown by the RadNet Interface Module's Online LED being solid. 6.
operation 4 SETUP MENU LEVEL 3 (CONTINUED) NURSE CALL* BUTTONS SETTING Default Press the Enter Button again to move to the next menu option. Alarm Use Up or Down Button to move between settings AND Signal IQ Alarm and Signal IQ press the Enter Button to accept the setting and move to the next menu option. OR press the Display Button to exit without saving the new setting and to return to the home display screen. *Refer to Section 7, Nurse call specifications for additional information.
4 operation SETUP MENU LEVEL 3 (CONTINUED) PARAMETER/MEASUREMENT SELECT - SCREEN 1 BUTTONS SETTING SpHb (if available) Press the Enter Button again to move to the next menu option. Use Up or Down Button to move between settings AND PVI (if available) (no parameter/ measurement displayed) press the Enter Button to accept the setting and move to the next menu option. OR press the Display Button to exit without saving the new setting and to return to the home display screen.
4 operation SETUP MENU LEVEL 3 (CONTINUED) PARAMETER/MEASUREMENT SELECT - SCREEN 3 BUTTONS SETTING SpHb Press the Enter Button again to move to the next menu option. (if available) Use Up or Down Button to move between settings AND PVI (if available) press the Enter Button to accept the and move to the next menu option. OR setting (no parameter/ measurement displayed) press the Display Button to exit without saving the new setting and to return to the home display screen.
4 operation HOME MODE OPERATION The Rad-87 can be placed into the Home Mode to protect unqualified users from changing the Rad-87 alarm settings and operation. Only the following menu and front panel functions are available: display brightness, pulse beep volume adjustment and alarm silence. Alarm volume is at highest setting. All default and user defined default settings are locked to their current values when home mode is selected and return to those values after a power cycle.