sunair RT-9000C, Руководство по эксплуатации и обслуживанию

Страница: 263 / 393

Document No. 8128000560
Software Revision – N1B (07 Oct 04)
7-31
RT-9000 B
Procedure - Systems using a Broadband Antenna
From the BITE Sub-Menu shown in Figure 7.3.3.2, depress the ‘TX – BITE’ key at 2 . The RT-9000 B will
start executing the Transmit BITE test routine.
After starting the test, a ‘TX BITE IN PROGRESS’ message will appear in the Operational Display until this
test section is finished. During this time, the RT-9000 B will rapidly key and unkey the Transmitter as it steps
through all eight (8) test frequencies. These individual tests together form the Antenna VSWR test.
Specific test frequencies where high VSWR conditions are found are excluded from the ‘Filter Module’ tests
later in the test routine. When high VSWR condition(s) are found, these findings will be displayed after the
Transmit BITE test routine completely finishes.
After the Antenna VSWR section finishes, test result messages will begin appearing as the next four (4)
Transmitter Modules are tested.
The Transmit BITE test routine concludes by testing the Filter Module. Of the eight (8) possible frequencies,
only those will be used that where earlier a high VSWR was NOT found. During this test, the RT-9000 B will
key and unkey the Transmitter as it steps through these test frequencies.
As the Transmit BITE test runs, it will stop on the first Fault found. This Fault must be corrected before
proceeding. If additional Faults are present, the Transmit BITE test routine must be repeated until no further
Faults are found.
Refer to the following chart for Transmit BITE test routine details.
RT-9000 B Transceiver
Transmit BITE (‘TX-BITE’) – Test Details – Broadband Antenna
Test Result Messages
Test
Order
Module Under
Test
Test
Frequency
(MHz)
No Fault found Fault found
a. 1.75
b.
2.75
c.
3.75
d.
5.75
e.
7.75
f. 10.75
g. 16.75
1
h.
Antenna
VSWR
Test
25.75
‘TX BITE IN PROGRESS’
2 Audio PCB
‘AUDIO OK’ ‘AUDIO FAULT’
3 IF PCB ‘IF OK’ ‘IF FAULT’
4 Front End PCB
‘FRONT END OK’ ‘FRONT END FAULT’
5 Power Amplifier Assembly
‘POWER AMPL OK’ ‘POWER AMPL FAULT’
a.
1.75
‘FILTER MODULE OK’
‘FILTER MODULE FAULT’
b.
2.75
c.
3.75
d.
5.75
e.
7.75
f. 10.75
g.
16.75
6
h.
Filter
Module
Assembly
25.75