Motorola Two Way Portable Radio Ht750 Ht1250 Mtx850 Mtx1250 Mtx8250 Mtx9250 Basic 68p80906z54 D Manual

							4-1
Chapter 4
Transceiver Performance Testing
4.1 General
These radios meet published specifications through their manufacturing process by utilizing high 
accuracy laboratory-quality test equipment. The recommended field service equipment approaches 
the accuracy of the manufacturing equipment with few exceptions. This accuracy must be maintained 
in compliance with the manufacturer’s recommended calibration schedule.
4.2 RF Test Mode
When the radio is operating in its normal environment, the radio’s microcontroller controls the RF 
channel selection, transmitter key-up, and receiver muting. However, when the unit is on the bench 
for testing, alignment, or repair, it is removed from its normal environment and cannot receive 
commands from its system. Therefore, the internal microcontroller does not key the transmitter or 
unmute the receiver. This prevents the use of a normal tuning procedure. To solve this problem, a 
special “test mode” is incorporated into the radio.
Note 1: On VHF/UHF, LTR models, the radio must be in either conventional or LTR mode.
Note 2: The test mode procedure that follows assumes that the Customer Programming Software 
Front Panel Access screen has both the FPA and RF TEST boxes selected. Select from the 
programming screen to enable or disable certain features of the radio RF test mode.
lFPA entry not selected blocks all test modes.
lFPA entry selected and RF TEST not selected blocks RF test mode.
lFPA entry selected and RF TEST selected enables all test modes.
To enter the test mode for a display radio:
1. Turn the radio on.
2. Within ten seconds after the self test is complete, press ‘side button 2’, shown in 
Figure 4-1 on page 4-3, five times in succession.
3. After “CSQ CHXX SP25” appears on the display, the radio is on channel XX (see Note 
on following page), carrier squelch mode, 25 kHz channel spacing. Each additional 
press of ‘side button 2’ (see Table 4-3 on page 4-5) scrolls to the next channel spacing, 
and a corresponding set of tones are sounded. Refer to Figure 4-4 on page 4-4 for test 
mode information for a four-line display radio.
4. Press ‘side button 1’ to scroll through the test environments listed in Table 4-1 on 
page 4-4.
5. Press ‘side button 2’ for 3 seconds to switch the radio to the control head test mode. 
‘LCD Test’ appears on the display.
6. Press ‘side button 1’ to turn on all the dots of the first character. Another ‘side button 1’ 
press turns on all the dots of the next character, continuing until the last character is 
reached.
7. Press ‘side button 1’ at the end of the LCD test to activate the ‘Icon Test’. The next ‘side 
button 1’ press turns on the first icon. 
						

							4-2Transceiver Performance Testing
To enter the test mode for a non-display radio:
Button Test (For models with ”G” in location 10 of model number Example: AAH25RCH6
GB6AN)
1. Press the orange button; “3/1” appears which indicates that switch 3 is in the closed condition.
2. Release the orange button; “3/0” appears which indicates that switch 3 is in the open condition.
3. Rotate the mode selector knob; “4/0”through “4/15” appears which indicates that knob 4 is in 
mode position 1 through 15.
4. Rotate the volume control; “2/0” through “2/255” appears.
5. Press SB1, view “96/1”; release, view “96/0”.
6. Press SB2, view “97/1”; release, view “97/0”.
7. Press SB3, view “98/1”; release view “98/0”.
8. Press PTT button, view “1/1”; release view “1/0”.
Keypad (For models with ”G” in location 10 of model number Example: AAH25RCH6
GB6AN)
1. Press 0, view “48/1”; release, view “48/0”.
2. Press 1, view “49/1”; release, view “49/0”.
3. Press 2, view “50/1”; release, view “50/0”.
4. Press 3, view “51/1”; release, view “51/0”.
5. Press 4, view “52/1”; release, view “52/0”.
6. Press 5, view “53/1”; release, view “53/0”.
7. Press 6, view “54/1”; release, view “54/0”.
8. Press 7, view “55/1”; release, view “55/0”.
9. Press 8, view “56/1”; release, view “56/0”.
10. Press 9, view “57/1”; release, view “57/0”.
11. Press *, view “58/1”; release, view “58/0”.
12. Press #, view “59/1”; release, view “59/0”.
13. Press 
						

							Transceiver Performance Testing4-3
14. Press HOME, view “129/1”; release, view “129/0”.
15. Press >, view “130/1”; release, view “130/0”.
16. Press Option Select1, view “135/1”; release, view “135/0”.
17. Press Option Select2, view “136/1”; release, view “136/0”.
18. Press Option Select3, view “137/1”; release, view “137/0”.
19. Pressing SB2 for 3 seconds in the Control Head Test mode will cause the radio to return to the RF 
Test mode. 
Figure 4-1:  Radio Side Button Location
Figure 4-2:  HT1550
•XLS Radio Side Button Location
Side Button 2
Side Button 3On/Off
KnobChannel
Selector
Knob
Side Button 1
(programmable)
(programmable)
(programmable)
Side Button 2
Side Button 3On/Off
KnobChannel, Talkgroup,
Zone or Menu Selector
Knob
Side Button 1
(programmable)
(programmable)
(programmable) 
						

							4-4Transceiver Performance Testing
Figure 4-3:  Two-Line Display
Figure 4-4:  Four-Line Display (HT1550
•XLS)
Table 4-1: Test Environments (Side Button 1)
Number of 
Side 
Button 1 
PressesNo. of 
BeepsDisplay
ShowsDescription Function
Initial (No but-
ton presses 
required)0CSQCarrier 
SquelchRX: if carrier detected
TX: mic audio
1 1 TPL Tone Private-
LineRX: unsquelch if carrier and tone 
(192.8Hz) detected
TX: mic audio + tone (192.8Hz)
22DPLDigital Private-
LineRX: unsquelch if carrier and digi-
tal code (131) detected
TX: mic audio + digital code (131)
3 3 DTMF Dual-Tone 
Multiple
FrequencyRX: unsquelch if carrier detected
TX: selected DTMF tone pair
45OpenUnsquelchRX: constant unsquelch
TX: mic audio
5 9 HSS MDC1200 RX: unsquelch if carrier detected
TX: 1500Hz tone
611CMPCompanderRX: if carrier detected
TX: mic audio
7 12 LLE Low-Level 
ExpandRX: if detected
TX: mic audio
Annunciators
Te s t  M o d e
Information,
Line 2
Annunciators 
						

							Transceiver Performance Testing4-5
Table 4-2: Test Environments (Models with “G” in location 10 of model number EX: AAH25RCH6GB6AN)
Table 4-3: Test Channel Spacing (Side Button 2)
Item 
No.No. of 
BeepsDescription Function
11
GKCCarrier SquelchRX: unsquelch if carrier detected
TX: mic audio
21
BKCTo n e
Private-LineRX: unsquelch if carrier and tone (192.8Hz) detected
TX: mic audio + tone (192.8Hz)
32
BKCDigital
Private-LineRX: unsquelch if carrier and digital code (131) detected
TX: mic audio + digital code (131)
43
BKCDual-Tone mul-
tiple frequencyRX: unsquelch if carrier detected
TX: selected DTMF tone pair
55
BKCOpen squelch
OSQRX: constant unsquelch
TX: mic audio
68
BKCTrunking Low 
Speed TLSRX: unsquelch if carrier detected
TX: mic audio + connect tone (105-8 MHz)
79
BKCTrunking High 
Speed THSRX: unsquelch if valid outbound signalling word (OSW) 
detected
TX: 1500Hz tone
811
BKCCMP RX: unsquelch if carrier detected
TX: mic audio
912
BKCLLERX: unsquelch if carrier detected
TX: mic audio
Number of Low Tones Channel Spacing
125/30 kHz
2 12.5 kHz
320 kHz 
						

							4-6Transceiver Performance Testing
4.3 Test Frequencies for Display and Non-Display Radios
The radio channels and test frequencies are listed in Table 4-4. The channels are selected using the 
channel selector switch located on top of the radio, as shown in Figure 4-1 on page 4-3. The test 
environment and channel spacing for any particular frequency is selected using ‘side buttons 1 and 2’, 
as listed in Table 4-1 on page 4-4 and Table 4-2 on page 4-5. The display radio shows the selected 
parameters on the radio display, and sounds the corresponding number of beeps and tones listed in 
Table 4-1and Table 4-1. The non-display radio only sounds the beeps and tones.
Note: On UHF LTR models, radios must be in conventional or LTR modes.
Table 4-4: Test Frequencies (Using the Channel Selector Switch)
Channel 
Selector 
Switch 
PositionTest 
ChannelLow 1 Low 2 VHF UHF 1 UHF 2 800
1 Low Power
8 High PowerTX #1 or #8
RX #1 or #8 29.740
29.74035.040
35.040136.025
136.025403.025
403.025450.025
450.025806.025
806.075
2 Low Power
9 High PowerTX #2 or #9
RX #2 or #932.040
32.02037.040
37.020142.325
142.325415.025
415.025462.850
462.850815.475
809.175
3 Low Power
10 High 
PowerTX #3 or #10
RX #3 or #1034.040
34.02039.040
39.020148.625
148.625425.025
425.025475.675
475.675824.925
812.325
4 Low Power
11 High PowerTX #4 or #11
RX #4 or #1136.040
36.02042.040
42.020154.925
154.925436.025
436.025488.500
488.500837.975
815.575
5 Low Power
12 High 
PowerTX #5 or #12
RX #5 or #1238.040
38.02045.040
45.020161.225
161.225449.025
449.025501.325
501.325851.025
818.675
6 Low Power
13 High 
PowerTX #6 or #13
RX #6 or #1340.040
40.02048.040
48.020167.525
167.525460.025
460.025514.150
514.150860.475
821.825
7 Low Power
14 High 
PowerTX #7 or #14
RX #7 or #1442.040
42.02050.040
50.020173.825
173.825469.975
469.975526.975
526.975869.975
824.975 
						

							Transceiver Performance Testing4-7
4.4 Receiver Performance Tests
The receiver and transmitter performance tests are contained in Table 4-5 and Table 4-6 respectively. 
Refer to Chapter 5, Figure 5-1 on page 5-2, for test equipment setup. Note that all test measurements 
are taken at 77
°F(25°C) and in conventional or trunked models.
Table 4-5: Receiver Performance Checks
* see Table 4-4
Test Name Service Monitor Radio Test Set Comments
Reference 
FrequencyMode: PWR MON
4th channel test frequency*
Monitor: Frequency error
Input at RF In/OutTEST MODE,
Test Channel 
4 carrier 
squelch out-
put at 
antennaPTT to continu-
ous (during the 
performance 
check)Frequency error to be 
±200 Hz VHF
±600 Hz UHF
±60 Hz Low Band
Rated Audio Mode: GEN
Output level: 1.0mV RF
4th channel test frequency*
Mod: 1 kHz tone at 
3 kHz deviation
Monitor: DVM: AC VoltsTEST MODE
Test Channel 
4 carrier 
squelchPTT to OFF 
(center), meter 
selector to 
Audio PASet volume control to 
3.16Vrms
DistortionAs above, except to distor-
tionAs aboveAs aboveDistortion 3.0% 
Typical
Sensitivity 
(SINAD)As above, except SINAD, 
lower the RF level for 12dB 
SINAD.As above PTT to OFF 
(center)RF input to be 
0.25µV
Noise 
Squelch 
Threshold 
(only radios 
with conven-
tional sys-
tem need to 
be tested)RF level set to 1mV RFAs abovePTT to OFF 
(center), meter 
selection to 
Audio PA, 
speaker/load to 
speakerSet volume control to 
3.16Vrms
As above, except change 
frequency to a conventional 
system. Raise RF level from 
zero until radio unsquelches.out of TEST 
MODE; select 
a conven-
tional systemAs  above Unsquelch to occur at 

						

							4-8Transceiver Performance Testing
*** MDC
*    See Table 4-4Table 4-6: Transmitter Performance Checks 
(Models with ”G” in location 10 of model number EX:AAH25RDH9GB6AN)
Test 
NameService Monitor Radio Test Set Comments
Reference 
FrequencyMode: PWR MON
4th channel test frequency*
Monitor: Frequency error
Input at RF In/OutTEST MODE,
Test Channel 
4 carrier 
squelch PTT to continu-
ous (during the 
performance 
check)Frequency error 
±200 Hz VHF
±600 Hz UHF
±60 Hz Low Band
Power RF As above As above As above Refer to Specifications 
Vo i c e  
Modulation 
(internal)Mode: PWR MON
4th channel test frequency*
atten to -70, input to RF In/
OutTEST MODE, 
Test Channel 
4 carrier 
squelch out-
put at 
antennaRemove modu-
lation inputPress PTT switch on 
radio. Say “four” loudly 
into the radio mic. 
Measure deviation: 
VHF, UHF, 800 MHz, 
Low 1 and Low 2: 
≥ 4.0 kHz but ≤ 5.0 kHz 
(25 kHz Ch Sp)
Vo i c e  
ModulationMode: PWR MON
4th channel test frequency*
atten to -70, input to RF In/
Out
Monitor: DVM, AC Volts
Set 1 kHz Mod Out level for 
0.025Vrms at test set,
80mVrms at AC/DC test set 
jackAs  above As above, meter 
selector to micDeviation:
VHF, UHF, 800 MHz, 
Low 1 and Low 2
≥ 4.0 kHz but ≤ 5.0 kHz 
(25 kHz Ch Sp) Global.
5 kHz (20 kHz Ch Sp)
U.S. and Canada.
High-Speed 
Data Modu-
lation***As aboveTEST MODE, 
Test Channel 
4 high speed 
output at 
antennaPTT to continu-
ous (during the 
performance 
check).Deviation: 800 MHz, 
VHF, UHF, Low 1 and 
Low 2: ≥ 2.5 kHz but 
≤ 3.5 kHz (25 kHz Ch 
Sp)
Low-Speed 
Data Modu-
lation 
800,UHFAs above TEST MODE, 
Test Channel 
4 TLS output 
at antennaPTT to continu-
ous (during the 
performance 
check)Deviation:
V H F,  U H F,  8 0 0 M H z ,  :  
≥500Hz but ≤ 1000Hz 
(25 kHz Ch Sp).
DTMF 
ModulationAs above,
4th channel test frequency*TEST MODE, 
Test Channel 
4 DTMF out-
put at 
antennaAs aboveDeviation: 
VHF, UHF, 800MHz, 
Low 1and Low 2: 
≥ 3.05 kHz but ≤ 3.45 
kHz (25 kHz Ch Sp)
PL/DPL 
ModulationAs above
4th channel test frequency*
BW to narrowTEST MODE, 
Test Channel 
4
TPL
DPLAs above Deviation:
VHF, UHF, 800MHz, 
Low 1 and Low 2: 
≥500Hz but ≤ 1000Hz 
(25 kHz Ch Sp). 
						

							5-1
Chapter 5
Radio Tuning, Programming, Cloning, Lowband Antenna 
Cutting Procedure, PassPort Tone Options, and 
Diagnostic Functions
5.1 Introduction
This chapter provides an overview of the Customer Programming Software (CPS) and tuner program 
designed for use in a Windows® NT, Windows® 95, Windows® 98, Windows® 2000, and Windows® 
Millennium (ME), environment. These programs are available in separate kits as listed in the 
Table 5-1. An installation instruction manual is also included with each kit. 
NOTE: Refer to the appropriate program on-line help files for the programming procedures.
Table 5-1: Software Installation Kits Radio Tuning Setup
Description Kit Number
Conventional, LTR, PrivacyPlus, PassPort CPS 
Subscription Package (3 years)H5177
CPS Plus (Conventional, LTR, PassPort) HVN9025
CPS (Privacy Plus)HVN9067
Installation Manual 6881089C70 
						

							5-2Radio Tuning, Programming, Cloning, Lowband Antenna Cutting Procedure, PassPort Tone Options, and Diagnostic Functions
5.2 Global Radio Tuning Setup
A personal computer (PC), Windows® 95/98, and a global tuner program are required to tune the 
radio. To perform the tuning procedures, the radio must be connected to the PC, radio interface box 
(RIB), and test equipment shown in Figure 5-1. 
Figure 5-1:  Radio Tuning Test Equipment Setup
5.2.1 Initial Test Equipment Setup
The supply voltage is connected to the radio using a Motorola battery eliminator, P/N 
AA0180305G54. The initial test equipment (Figure 5-1) control settings are listed in Table 5-2. 
NOTE: Refer to appropriate program on-line help files for the tuning procedures.
Table 5-2: Initial Equipment Control Settings
Service Monitor Test Set Power Supply
Monitor Mode: Power MonitorSpeaker set: AVoltage: 7.5Vdc
RF Attenuation: -70 Speaker/load: 
SpeakerDC on/standby: 
Standby
AM, CW, FM: FMPTT: OFFVolt Range: 10V
Oscilloscope Source: Mod
Oscilloscope Horizontal: 10mSec/Div
Oscilloscope Vertical: 2.5 kHz/Div
Oscilloscope Trigger: Auto
Monitor Image: Hi
Monitor BW: Nar
Monitor Squelch: mid CW
Monitor Volume: 1/4 CWCurrent: 2.5A
Wattmeter
Audio Generator
Sinad Meter
AC Voltmeter
30 dB Pad
30 dB Pad
  Battery 
Block
Powe r  
SupplyAudio In
Tx
Rx ReceiveTransmit
RF Generator BNC RF Adapter
HLN9756
RIB
RLN-4008
RIB Power SupplyRLN4460A Te s t  B o xRx 
 
GndData 
Tx Data
Radio
Computer Interface          Cable 3080369B72
Program/
AARKN 4074Te s t  C a b l e
Service Monitor
or Counter
DB15 DB9
AC Plug
120/230 Vacor B 3.5 mm to
Ferrule BNCDouble Male
RLN4510
+12VDC
0180305G54
Battery
Eliminator
7.5V Reg.
0180357A57 (120V)
0180358A56 (230V)