Honeywell
COMPONENT MAINTENANCE MANUAL
PART NUMBER 964-0452
I.B.1516A Page 122.7
Oct 25/02
23-12-01
Depending upon the fault, the fault isolation chart indicates the module suspected of having
a fault.
In the event of no fault being reported by the BITE system, e.g., in the case of unspecified
fault reports, the chart advances to the Transceiver ATP. Depending upon the results ob-
tained, reference is again to the relevant module fault isolation procedure.
NOTE: For any frequencies that fail to meet specification in the system transmit test, the affected
frequencies can be individually retested per the procedure of step H.
H . Procedure to Verify Failed Frequency with the CFDS Function
(1) Start CFDS by clicking the
CFDS
icon. Enter the desired frequency at the RCP and click
the SSB line once.
(2) Switch back to the Windows Desktop by pressing the Alt and Tab keys.
(3) Start the CouplerCOM by double-clicking the
CPLRCOM
icon.
(4) On the Coupler screen, click the X3 Function key.
(5) Select level 3 of the Function keys, followed by PNR# and SNR#.
(6) Press the Ctl and J keys.
(7) Type x1 and press Enter.
(8) Select level 1 of the Function keys.
(9) Make sure that an AF generator is set to provide 1kHz and 250mV to the MIC input
(MP-1A/MP-1B).
(10)Start transmission by pressing PTT.
(11)Observe the power meter for the desired power.
(12)While the power is still transmitting, click the X3 Function key followed by the F2 Function
key to display the transmitting frequency. Release PTT when the desired power is
reached.
(13)The tuning string shall be displayed.
(14)Verify that the VSWR is within specification (
≤
1.5).
(15)Repeat the procedure for subsequent frequencies.
NOTE: In order to tune to the same frequency again, the RT/Coupler must be detuned
(tune to a different frequency, then go back to the desired frequency.)
NOTE: When dealing with SSB, there is a 1kHz offset between the frequency selected in
the RCP and the actual frequency being transmitted. For instance, if the desired
frequency is 2MHz, the frequency generated by the generator should be
2.001MHz.