Motorola Gm1200e 68p64115b12 Manual
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GM1200E Accessory Diagrams Accessories3-13 2.7Power Supply GPN6133 (EMC/CE Approved)
GM1200E Accessory Diagrams 3-14Accessories 2.8Power Supply HPN8393 (Not EMC Approved) Electrical Characteristics Input Voltages:105-125VAC; 210-250VAC, 47-63Hz Output Voltage:13.8VDC ±0.1 volts (internally adjustable 11-15VDC) Ripple:less than 5mV peak to peak (full load and low line) Provides 8 amps continuous duty and 14 amps intermittent duty over an ambient temperature range of -30 to +60°C . (4 Pos) Positions 1 and 2 are positive power output terminals and positions 3 and 4 are for negative power out- put terminals for 14 amp max. current. (6 Pos) Position 1 is negative power output terminal for 3 amp max current. Positions 2,3,6 are empty. Position 4 is positive 13.8VDC power output terminal. Position 5 is positive trickle charge output terminal.
GM1200E Accessory Diagrams Accessories3-15 Schematic Diagram
List of Accessories 3-16Accessories 3.0List of Accessories Mechanical Hardware Kits: GLN7324Low Profile Trunnion Kit (Standard) GLN7317High Profile Trunnion Kit GLN7320In-Dash Mount, DIN install. Kit GLN7325IP54 seal, accessory connector HLN9457Accessory Connector Facility Kit Microphones: GMN6146Enhanced Compact Microphone (Standard) GMN6148DTMF Microphone HMN3141Handset with Hang-up cup HMN3000Desk Microphone Speakers: Speaker connecting cables are provided with a 16-pin accessory connector plug. GSN605913 W External Speaker, square Cables: GKN6270Battery power cable 3m, 10A fuse (Standard) GKN6271Ignition switch cable ENKN4000MAP27 Interface Cable Other GKN6272Alarm, Relay and Cable Kit GLN7323External PTT GLN7326Base Tray (with internal speaker) GPN612624/12V DC Converter, 6A GPN612724/12V DC Converter, 15A GPN6133EMC approved Power Supply HPN4002Non-EMC approved Power Supply HPN8393Non-EMC approved Power Supply
Radio Tuning Procedure4-i Chapter 4 Radio Tuning Procedure Table of Contents Table of Contents ParagraphPage 1.0GM1200E Tuning Procedure...................................................................... 1 1.1General........................................................................................................ 1 1.2PA Bias Voltage........................................................................................... 2 1.3Battery Threshold........................................................................................ 3 1.4Transmitter Power....................................................................................... 3 1.5Reference Oscillator.................................................................................... 4 1.6Front-End Pre-Selector................................................................................ 4 1.7Rated Volume.............................................................................................. 5 1.8Squelch........................................................................................................ 6 1.9Transmit Voltage Limit................................................................................. 6 1.10Transmit Deviation Balance (Compensation).............................................. 6 1.11Transmit Deviation Limit.............................................................................. 7 1.12Signalling Alignments.................................................................................. 7
GM1200E Tuning Procedure Radio Tuning Procedure4-1 1.0GM1200E Tuning Procedure 1.1General The recommended hardware platform is a 386 or 486 DX 33 PC (personal computer) with 8 Mbytes RAM, MS DOS 5.0™, Windows 3.1™, and DPS (Dealer Programming Software). These are required to align the radio. Refer to your DPS Installation Manual for installation and setup procedures for the required software; the user manual is accessed (and can be printed if required) via the DPS. To perform the alignment procedures, the radio must be connected to the PC, RIB (Radio Interface Box), and Universal Test Set as shown in figure 4-1. Figure 4-1 Radio Alignment Test Setup All tuning procedures are performed from the Service menu. Before going into the Service menu, the radio must first be read using the File / Read Radio menu (if the radio has just been programmed with data loaded from disk or from a newly created codeplug, then it must still be read so that the DPS will have the radio’s actual tuning values). All Service windows read and program the radio codeplug directly; you do NOT have to use the DPS Read Radio / Write Radio functions to program new tuning values. 4 BNC RIB RLN-4008B RIB POWER SUPPLY EPN4041 (230 VAC. Euro)/ EPN4040 (230 VAC. UK)COMPUTER INTERFACE CABLE 30-80369B72 (IBM AT 9PIN ONLY) 30-80369B71 (IBM XT 25PIN ONLY)DATA GND COMPUTER AUDIO GENERATOR SINAD METER AC VOLTMETER TX RX 30 dB PAD 30 dB PAD RF GENERATORSERVICE MONITOR OR COUNTER WATTMETER TRANSMIT RECEIVE TEST SET RTX4005/ GTF180RADIO PROGRAM/TEST CABLE GTF377 (Databox Radios only) or GTF374 AUDIO IN SMA-BNC 58-80348B33 TEST CABLE GTF-376 15PIN 25PINNote: Battery can be used in RIB making power supply optional MIC IN CAUTION:DO NOT switch radios in the middle of any Service procedure. Always use the Program or Cancel key to close the tuning window before disconnecting the radio. Improper exits from the Service window may leave the radio in an improperly configured state and result in seriously degraded radio or system performance.
GM1200E Tuning Procedure 4-2Radio Tuning Procedure The Service windows introduce the concept of the “Softpot”, an analog SOFTware controlled POTentiometer used for adjusting all transceiver alignment controls. A softpot can be selected by clicking with the mouse at the value or the slider or by hitting the TAB key until the value or the slider is highlighted. Each Service window provides the capability to increase or decrease the ‘softpot’ value with the mouse, the arrow keys or by entering a value with the keyboard. The window displays the minimum, maximum, and step value of the softpot. In addition transmitter tuning windows indicate the transmitter frequency and whether the radio is keyed. Adjusting the softpot value sends information to the radio to increase (or decrease) a DC voltage in the corresponding circuit. For example, increasing the value in the Reference Oscillator tune window instructs the radio microprocessor to increases the voltage across a varactor in the reference oscillator to increase the frequency. Pressing the Program button stores all the softpot values of the current window permanently in the radio. In ALL cases, the softpot value is just a relative number corresponding to a D/A (Digital-to-Analog) generated voltage in the radio. All standard measurement procedures and test equipment are similar to previous radios. Refer to the DPS on-line help for information on the tuning software. Perform the following procedures in the sequence indicated. Note:All tuning procedures must be performed at a supply voltage of 13.2V unless otherwise stated. The Modulation Analyzer to measure the deviation should be set to frequency modulation with de-emphasis switched off and all high pass filters switched off. 1.2PA Bias Voltage Adjustment of the PA Bias is critical for proper radio operation. Improper adjustment will result in poor operation and may damage the PA FET device. For this reason, the PA bias must be set before the transmitter is keyed the first time. Note:For certain radio models there are two bias voltage settings. For these radios both ‘ Bias 1 Voltage ’ and ‘ Bias 2 Voltage ‘ need to be adjusted when aligning the PA Bias. For models that only have one bias voltage setting, the ‘ Bias 2 Voltage ‘ will be shown in grey on the service menu. 1.From the Service menu, select Transmitter Alignment. 2.Select Bias Voltage Tuning to open the bias voltage tuning window. If the control voltage is out of range, an error message will be displayed. In this case the radio hardware has a problem and tuning must be stopped immediately. 3.Click the button labelled “0” to set the quiescent current temporarily to 0 mA 4.Measure the DC current of the radio. Note the measured value and add the specified quiescent current shown in table 4-1. The result is the tuning target. 5.Adjust the current per the target calculated in step 4. 6.Click the Program button to store the softpot value.
GM1200E Tuning Procedure Radio Tuning Procedure4-3 1.3Battery Threshold The radio uses 2 battery threshold levels Tx High and Tx Low to determine the battery condition. The Program buttons must only be activated when the power supply is set to the indicated voltage. If the DPS detects that the voltage is not within the expected range for the threshold in question then a message will be displayed to warn that the radio may not be set up correctly for the alignment operation. 1.From the Service menu, select Transmitter Alignment. 2.Select Battery Threshold to open the battery threshold tuning window. The current softpot values are displayed for information only and cannot be edited. 3.Set the supply voltage to the value indicated for TX High. 4.Click the TX High Program button to store the softpot value for TX High. 5.Set the supply voltage to the value indicated for TX Low. 6.Click the TX Low Program button to store the softpot value for TX Low. 7.Close the window by clicking Cancel. 1.4Transmitter Power The radio has two power level settings, a high power level setting, and a low power level setting. IMPORTANT: To set the transmitter power for customer applications use the Common Radio Parameters window under the Edit menu and set the “Low Power Level” and “High Power Level” powers to the desired values. Only if the transmitter components have been changed or the transmitter does not transmit with the power set in the Common Radio Parameters window the following procedure should be performed. The advanced power setting technology employed in the radio makes use of two reference power level settings along with parameters describing the circuit behaviour. To determine these parameters the DPS requires the power values measured for two different settings. Table 4-1 Quiescent Current Alignment RF-BandTarget UHF VHF / 300-390MHz 440mA±10% 150mA±15% CAUTION:Inadvertant use of the program buttons may result in radio failure. CAUTION:When setting the Transmitter Power DO NOT EXCEED THE RECOMMENDED POWER SET LIMITS of 25W.
GM1200E Tuning Procedure 4-4Radio Tuning Procedure 1.From the Service menu, select Transmitter Alignment. 2.Select RF Power Tuning to open the RF power tuning window. The window will indicate the transmit test frequencies to be used. 3.Select Point 1 value of the first frequency. 4.Click Toggle PTT to key the radio. The status bar will indicate that the radio is transmitting. 5.Measure the transmitter power on your power meter. 6.Enter the measured value in the box Point 1. 7.Select Point 2 value of the first frequency. 8.Measure the transmitter power on your power meter. 9.Enter the measured value in the box Point 2. 10.Click Toggle PTT to dekey the radio. 11.Repeat steps 3 - 10 for all test frequencies shown in the window. 12.Click Program to store the softpot values. 1.5Reference Oscillator Adjustment of the reference oscillator is critical for proper radio operation. Improper adjustment will not only result in poor operation, but also a misaligned radio that will interfere with other users operating on adjacent channels. For this reason, the reference oscillator should be checked every time the radio is serviced. The frequency counter used for this procedure must have a stability of 0.1 ppm (or better). 1.From the Service menu, select Transmitter Alignment. 2.Select Reference Oscillator to open the reference oscillator tuning window. The tuning window will indicate the target transmit frequency. 3.Click Toggle PTT to key the radio. The status bar will indicate that the radio is transmitting. 4.Measure the transmit frequency on your frequency counter. 5.Adjust the reference oscillator softpot in the tuning window to achieve a transmit frequency within the limits shown in table 4-2. 6.Click Toggle PTT again to dekey the radio and then press Program to store the softpot value. 1.6Front-End Pre-Selector Alignment of the front-end pre-selector is normally not required on these radios. Only if the radio has poor receiver sensitivity or the pre-selector parts has been replaced the following procedure should be performed. The softpot value sets the control voltage of the pre-selector. Its value needs to be set at 7 frequencies across the frequency range. 1.Set the test box (GTF180) meter selection switch to the Audio PA position and connect a SINAD meter to the METER port. 2.From the Service menu, select Receiver Alignment. 3.Select Front End Filter to open the pre-selector tuning window. The window will indicate the receive test frequencies to be used.Table 4-2 Reference Oscillator Alignment RF-BandTarget All bands±150 Hz