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6.4.1.
External Testing Setup Procedure
IMPORTANT NOTE
To allow accurate measurement of the complete unit the test equipment must be connected as shown (Figure 6.6). The PCB
Test Setup must be used to enable repair to PCBs. Once repair/replacement is complete, the assembled unit must be tested
and calibrated with the jigs and tools connected as shown in Figure 6.7.
Full Test Equipment Requirements
For testing the handheld unit the following equipment is required:
1.
Interface box
2.
12 V power supply
3.
Personal computer (IBM compatible) with RS232 interface
4.
RS232 interface cable (9 pin straight through connection)
5.
GSM test station
6.
RF Adaptor
7.
Interface cable – JT00004
The channel box software (supplied on floppy disk) should be installed onto the main drive of the personal computer.
The RF cable is connected to the GSM test station via a suitable adapter. The 12 V supply is connected to the rear socket of
the Interface box.
Two modes are available for testing the handheld unit:
1.
Test Mode.
The Test Mode facility allows various sections of the handheld unit to be individually activated.
2.
Normal Mode.
The Normal Mode facility allows the handheld unit to be powered externally for call origination/receiving operations.
NOTE: A suitable test SIM card will be required which is compatible with the GSM test station.
Power On into Test Mode
1.
Connect the test equipment into test mode configuration.
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2.
Ensure that the following settings are made:
a.
Interface box IFB003 or IFB004
Power:
UP position
IGN:
UP position
Mode
DOWN position
Voltage
Middle Position (7.2 V)
MCUK000601C8
Service Manual
TO GSM TEST SET
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Figure 6.8: External test equipment setup
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Section 6
– 37 –
TEST AND MEASUREMENT
Issue 1
Revision 0
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