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...

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...

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...

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...

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...

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...

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*...

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...

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....

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...