Operator's Manual

ManualsBrandsE F Johnson ManualsElectronics242-5110

TRANSCEIVER PROGRAMMING

3-18

September 2001

Part No. 001-5100-001

Figure 3-4 Conventional Project 25 Digital Channel Screen

3.5.7 CONVENTIONAL PROJECT 25 (DIGITAL)

CHANNEL SCREEN PARAMETERS

The following parameters are programmed in the

conventional Project 25 digital channel screen shown

in Figure 3-4. Refer to Section 2.6.16 for more infor-

mation on Project 25 operation.

The Selected Channel, Channel Type, Transmit

Power, and Transmit Time-Out Parameters are

programmed the same as with analog channels

described in preceding section.

Talk Groups

This selects the Project 25 talk group that is

assigned to the channel. The talk group programs the

talk group ID, strapping mode, and encryption key

address. Talk groups for Project 25 channels are

programmed in the Conventional System Talk Group

screen described in Section 3.5.4.

Strapped to Selected Group

- If this parameter is

selected, the talk group on that channel is always the

selected talk group and cannot be changed.

Radio List Selectable

- If this parameter is selected,

the talk group may be changed by the radio operator

using the (Digital) Talk Group Select option switch.

Busy Channel Lockout

Off = disabled, Noise = transmit disallowed if

carrier is detected, NAC = transmit allowed only if

correct NAC is detected (Section 2.6.5).

Access Codes

Programs the transmit and receive NAC

(Network Access Code). These codes can be 0-4095.

Refer to Section 2.6.16 for more information.

Mixed Mode

A mixed mode that allows both analog and

Project 25 operation to be programmed on a channel

can be enabled on the Project 25 channel screen (see

Figure 3-4). This mode is programmed as follows:

Enable

- Checking this box selects mixed

analog/Project 25 operation on the channel.

Tx Analog

- Checking this box selects Transmit =

analog/Receive = Project 25. If it is not checked,

the opposite is selected.

When the mixed mode is selected, the channel

modulation, coded squelch, and ANI signaling param-

eters for the analog channel must then be programmed.

Summary of content (29 pages)

PAGE 1
TRANSCEIVER PROGRAMMING Figure 3-4 Conventional Project 25 Digital Channel Screen 3.5.7 CONVENTIONAL PROJECT 25 (DIGITAL) CHANNEL SCREEN PARAMETERS Busy Channel Lockout Off = disabled, Noise = transmit disallowed if carrier is detected, NAC = transmit allowed only if correct NAC is detected (Section 2.6.5). The following parameters are programmed in the conventional Project 25 digital channel screen shown in Figure 3-4. Refer to Section 2.6.16 for more information on Project 25 operation.
PAGE 2
TRANSCEIVER PROGRAMMING These parameters are programmed the same as described in Section 3.5.6. The preceding SMARTNET/SmartZone System General screen programs the following parameters: 3.6 PROGRAMMING SMARTNET/SMARTZONE SYSTEMS AND CHANNELS Restricted Access Change System ID Button - Displays the Change System ID screen which is used to enter the system ID of the system. This ID is entered as a hexadecimal number from 0-9 and A-F. Valid numbers are from 0001-FFFF.
PAGE 3
TRANSCEIVER PROGRAMMING Individual ID - Uniquely identifies the radio on a particular system. Each radio must have a different Unit ID. Valid Unit IDs are from 1-63535. Channel - The physical channel used for dynamic regrouping. The value is selected on the Channel Parameters screen. Connect Tone - The tone expected by the controller on the traffic channel to verify that a subscriber transmission is occurring. This tone should be set the same as it is in the controller.
PAGE 4
TRANSCEIVER PROGRAMMING Answer Only - Telephone calls can be received but not placed. Phone DTMF Timing Initial Delay - Delay from 50-500 milliseconds from when a traffic channel is granted for phone interconnect to the start of the dialing out of the phone number. List Only - Telephone calls can be placed and received, and numbers can be recalled from memory only. Digit Duration - Duration from 50-500 milliseconds of each phone number digit.
PAGE 5
TRANSCEIVER PROGRAMMING Rx Secure Autodetect - With the SecureNet protocol, selecting “Secure” enables automatic detection of encrypted receive signals. This may increase the response time of the radio to an incoming signal. Selecting “Proper Key” causes the radio to search the available SecureNet keys until it finds a match for the current transmission. Each SMARTNET/SmartZone system can be programmed with up to 256 talk groups.
PAGE 6
TRANSCEIVER PROGRAMMING button on the right side of the screen. The following information is then programmed in the dialog box that is displayed: Tx Period - Defines the period during which transmissions occur with the microphone audio unmuted (without user intervention). Times of 10-120 seconds in 10-second steps can be selected. Entry Number - This box selects the entry to be edited. The scroll bars to the right of this box select the desired entry. A phone list can contain up to 16 entries.
PAGE 7
TRANSCEIVER PROGRAMMING group to be edited from the “AG” pull-down menu. Then click the talk groups to select/de-select them and then click the “Update List” button to make the changes. click the Message Aliasing tab and then the “Modify List” button on the right side. The following information is then programmed in the dialog box that is displayed: Main Screen Parameters Message Number - This box selects the message to be edited.
PAGE 8
TRANSCEIVER PROGRAMMING Close Button - Verifies the current entry, stores it, and then closes the dialog box. If the current entry contains an invalid field, the dialog box does not close and the invalid field is highlighted. Frequency - The transmit and receive frequency of the control channel. These are the mobile frequencies, not the repeater frequencies. Only multiples of 5 kHz and 6.25 kHz are valid.
PAGE 9
TRANSCEIVER PROGRAMMING 3. To select the priority channel, click the Set Priority button. Then select the desired Zone/Channel or “None” if no priority channel is to be scanned. 4. Repeat the preceding steps for the other scan lists if applicable. Status Aliasing Screen Other Band Trunking Screen This screen organizes the available frequency band into three sub-bands, called splits. Each split is defined by a start frequency, stop frequency, and channel spacing as follows.
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TRANSCEIVER PROGRAMMING Figure 3-5 SMARTNET/SmartZone Channel Screen 3. To set up a SMARTNET channel, select “SMARTNET” as the channel type, and to set up a SmartZone channel, select “SmartZone”. Selected Channel Zone Box - Clicking the arrow to the right of this box displays the available zones. Click on a zone to select it. Zones and zone aliases are set up on the RadioWide General screen described in Section 3.4.2. 4.
PAGE 11
TRANSCEIVER PROGRAMMING Screen” description in Section 3.6.7). If “No Scan List” is programmed, scanning is not selectable on that channel. Transmit - Not programmable because the transmit frequency is dynamically assigned over the air (“Trunked” is always displayed). Receive - Dynamically assigned like the preceding transmit frequency. Enable This Channel - Not used because SMARTNET/SmartZone channels are always enabled if set up.
PAGE 12
TRANSCEIVER PROGRAMMING frequencies, trunked group IDs, and encryption information. Therefore, the radio must be reprogrammed after this is done to make it operational again. changed using the radio keypad when the keypad is locked by entering the old password and then pressing the # key. Refer to Section 2.4.3 for more information.
PAGE 13
TRANSCEIVER PROGRAMMING 800 MHz Channels FCC Chan. Mobile Rx Mobile Tx No. Freq. Freq 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 851.0125 851.0375 851.0625 851.0875 851.1125 851.1375 851.1625 851.1875 851.2125 851.2375 851.2625 851.2875 851.3125 851.3375 851.3625 851.3875 851.4125 851.4375 851.4625 851.4875 851.5125 851.5375 851.5625 851.5875 851.6125 851.6375 851.6625 851.6875 851.7125 851.7375 851.7625 851.
PAGE 14
TRANSCEIVER PROGRAMMING 800 MHz Channels FCC Chan. Mobile Rx Mobile Tx No. Freq. Freq 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 854.6125 854.6375 854.6625 854.6875 854.7125 854.7375 854.7625 854.7875 854.8125 854.8375 854.8625 854.8875 854.9125 854.9375 854.9625 854.9875 855.0125 855.0375 855.0625 855.0875 855.1125 855.1375 855.1625 855.1875 855.2125 855.
PAGE 15
TRANSCEIVER PROGRAMMING 800 MHz Channels FCC Chan. Mobile Rx Mobile Tx No. Freq. Freq 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 858.2125 858.2375 858.2625 858.2875 858.3125 858.3375 858.3625 858.3875 858.4125 858.4375 858.4625 858.4875 858.5125 858.5375 858.5625 858.5875 858.6125 858.6375 858.6625 858.6875 858.7125 858.7375 858.7625 858.7875 858.8125 858.
PAGE 16
TRANSCEIVER PROGRAMMING 800 MHz Channels FCC Chan. Mobile Rx Mobile Tx No. Freq. Freq 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 861.8125 861.8375 861.8625 861.8875 861.9125 861.9375 861.9625 861.9875 862.0125 862.0375 862.0625 862.0875 862.1125 862.1375 862.1625 862.1875 862.2125 862.2375 862.2625 862.2875 862.3125 862.3375 862.3625 862.3875 862.4125 862.
PAGE 17
TRANSCEIVER PROGRAMMING 800 MHz Channels FCC Chan. Mobile Rx Mobile Tx No. Freq. Freq 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 865.4125 865.4375 865.4625 865.4875 865.5125 865.5375 865.5625 865.5875 865.6125 865.6375 865.6625 865.6875 865.7125 865.7375 865.7625 865.7875 865.8125 865.8375 865.8625 865.8875 865.9125 865.9375 865.9625 865.9875 866.0000 866.0125 866.
PAGE 18
TRANSCEIVER PROGRAMMING 800 MHz Channels FCC Chan. Mobile Rx Mobile Tx No. Freq. Freq 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 867.5000 867.5125 867.5250 867.5375 867.5500 867.5625 867.5750 867.5875 867.6000 867.6125 867.6250 867.6375 867.6500 867.6625 867.6750 867.6875 867.7000 867.7125 867.7250 867.7375 867.7500 867.7625 867.7750 867.7875 867.8000 867.8125 867.8250 867.
PAGE 19
TRANSCEIVER PROGRAMMING 800 MHz Channels FCC Chan. Mobile Rx Mobile Tx No. Freq. Freq - 869.3000 869.3125 869.3250 869.3375 869.3500 869.3625 869.3750 869.3875 869.4000 869.4125 869.4250 869.4375 869.4500 869.4625 869.4750 869.4875 869.5000 869.5125 869.5250 824.3000 824.3125 824.3250 824.3375 824.3500 824.3625 824.3750 824.3875 824.4000 824.4125 824.4250 824.4375 824.4500 824.4625 824.4750 824.4875 824.5000 824.5125 824.5250 FCC Chan. Mobile Rx Mobile Tx No. Freq. Freq - 869.5375 869.5500 869.
PAGE 20
CIRCUIT DESCRIPTION SECTION 4 CIRCUIT DESCRIPTION 4.1 GENERAL OVERVIEW The Keypad Board provides the input/output interface for the user. It accepts input from the keypad and the various control knobs and sends the appropriate signals to the DSP on the Digital Board and to the RF Board for proper configuration. It provides the dual display information to inform the user of the status of the radio.
PAGE 21
CIRCUIT DESCRIPTION The signal from the microphone is amplified by the audio PA and is then routed to the ADSIC chip where it is first digitized at a 16 ksps rate and then sent to the DSP. The DSP performs the required filtering, adds the desired signaling, converts the sample rate to 48 ksps and then sends the resulting signal back to a D/A in the ADSIC to produce the analog modulation signal for the VCO. The modulated VCO signal is then sent to the RF PA for transmission.
PAGE 22
CIRCUIT DESCRIPTION Transceiver Board Keypad Board Digital Board 5V Analog Switched RF B+ 5V Analog Regulator 5V Digital 5V Digital DC/DC Audio PA Battery Probe on/off Unswitched B+ Power Amplifier Low Power Detector Controller Figure 4-1 Power Supply Diagram 4.1.5 DIGITAL BOARD The receiver back end consists of a two-pole crystal filter, IF amplifier, a second two-pole crystal filter, and the ABACUS digital back-end IC. The two pole filters are wide enough to accommodate 5 kHz modulation.
PAGE 23
CIRCUIT DESCRIPTION 4.2 POWER SUPPLY 6. The controller sets the control line to the shutdown pin of the DC/DC converter to a high level. 4.2.1 GENERAL 7. The controller sets the radio in an operational mode. The radio is typically powered by a battery which is fastened at the back of the radio. The electrical contact between the battery and the radio occurs on probes located on the Digital board (see Figure 4-1).
PAGE 24
CIRCUIT DESCRIPTION RF BOARD Figure 4-2 RF Board Block Diagram 5. When the voltage gets really low, the 5 volt DC/DC converter automatically shuts down. applied to a low-pass filter. After filtering, the signal is routed to a prescaler divider in the synthesizer. 6. The 5-volt analog and switched RF B+ sources turn off. The divide ratios for the prescaler circuits are determined from information stored in an EEPROM.
PAGE 25
CIRCUIT DESCRIPTION RF BOARD (CONT’D) of the IF amplifier is applied to a second crystal filter through a matching circuit. This filter supplies further attenuation at the IF sidebands to increase radio selectivity. The transmit VCO signal is amplified by an internal buffer, routed through a low-pass filter, and then sent to the transmit power amplifier module. The reference oscillator supplies a 16.8 MHz clock to the synthesizer where it is divided down to a 2.1 MHz clock.
PAGE 26
CIRCUIT DESCRIPTION REVISION 2 DIGITAL BOARD The ADSIC is a support chip for the DSP. It provides the interface between the DSP and the analog signal paths, and between the DSP and the ABACUS chip on the RF Board. Configuration of the ADSIC is handled primarily by the microcontroller. The DSP has access to a few memory-mapped registers on the ADSIC. signal for the transmit ALC IC. The synthesizer sends a LOC signal to the transmit ALC IC.
PAGE 27
CIRCUIT DESCRIPTION DIGITAL BOARD (CONT’D) memory. Some of these registers are used for additional ADSIC configuration controlled directly by the DSP. Some of the registers are data registers for the speaker D/A. Analog speaker audio is processed through this parallel bus where the DSP outputs the speaker audio digital data words to this speaker D/A. In addition, an analog waveform is generated which is output to SDO (Speaker Data Out). initialized by the microcontroller through the SPI bus.
PAGE 28
CIRCUIT DESCRIPTION DIGITAL BOARD (CONT’D) 4.4.5 DSP CHIP (U12) The DSP accesses the difference spaces by setting the corresponding lines PS*, DS*, IS* low. Only one of these three signals can be low at a given time. When the DSP accesses internal SRAM, none of these lines is activated. DSP chip U12 has a 16-bit data bus and a 16-bit address bus. It has 10K words of internal SRAM from which 0.5K are used only to store data and 9.5K are used either for data or for program storage.
PAGE 29
CIRCUIT DESCRIPTION DIGITAL BOARD (CONT’D) Program Space Internal Map ps_map = 1 ps_map = 0 On-chip ROM (MP/MC = 0) external (MP/MC = 1) $7FF $800 On-chip SRAM (RAM = 1) external (RAM = 0) $2BFF $2C00 External SRAM (pages 0 and 1) External Flash (pages 0-7) external $FBFF $FE00 On-Chip SRAM (CNF=1) external (CNF=0) Data Space Internal Map I/O Space External Map mmregs $5F $60 On-Chip SRAM $7F $80 reserved $FF $100 On-Chip SRAM (CNF=0) $2FF $300 On-Chip SRAM $4FF $500 reserved UART control/st