Document No. 8128000560
Software Revision – N1B (07 Oct 04)
7-36
RT-9000 B
7.3.3.1.4 Coupler BITE (‘CU BITE’)
Overview
The Coupler BITE (‘CU BITE’) test routine performs a brief Antenna Coupler “Tuning Test” using three (3) test
frequencies. No RT-9000 B modules are tested. The test frequencies used for this test are listed in the
following chart.
Coupler BITE
Test Frequencies
(MHz)
5.75
16.75
29.75
Procedure
From the BITE Sub-Menu shown in Figure 7.3.3.2, depress the ‘CU – BITE’ key at 4 . The RT-9000 B will
start executing the Coupler BITE test routine.
The Antenna Coupler will start a “Tuning Cycle” using the first test frequency. While the tuning cycle is in
progress, a ‘CU BITE IN PROGRESS’ message will briefly appear in the Operational Display.
After the tuning cycle finishes or the maximum allotted tuning time expires, a test result message will be
displayed. A ‘SYSTEM READY’ or ‘SYSTEM FAULT’ message will indicate these results. If the Antenna
Coupler is totally inoperative, a ‘COUPLER FAULT’ message will instead be displayed.
In both above cases where a Fault is found, the Coupler BITE test will stop. The BITE test will stop at the first
Fault found and must be corrected before proceeding. If additional Faults are present, the Coupler BITE test
routine must be repeated until no further Faults are found.
Refer to the following chart for Coupler BITE test routine details
RT-9000 B Transceiver
Coupler BITE (‘CU-BITE’) – Test Details
Test Result Messages
Test
Order
Module Under
Test
Test
Frequency
(MHz)
No Fault found Fault found
‘COUPLER TUNING’
1
5.75
‘SYSTEM READY’ ‘SYSTEM FAULT’
2
16.75
3
Antenna Coupler
29.75
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