Scan Threshold Adjustment Setup - Watkins-Johnson Company WJ-8718A/MFP Instruction Supplement

FIGURE 4-2 WJ-8718A/MFP
5. Press 89 and then LOCK OUT, to lock out SectorB from the scan.
6. Press 87 and then AUTO SCAN, which establishes an f1 to f2 single
sector scan. The FREQUENCY/MHz window will display frequencies
between 14.9 MHz and 15.1 MHz.
7. Slowly adjust R7 clockwise until the FREQUENCY/MHz display stops
and dwells on a signal for a dwell time of one second.
8. Press AUTa SCAN to terminate the scan mode.
9. Enter a threshold level code of 1 and press AUTa SCAN to restart
scan.
10. First adjust the signal generator low, so that the FREQUENCY/MHz
display continues scanning. Gradually increase the output of the
signal generator, until the FREQUENCY/MHz display stops and
dwells on the signal. Signal generator output level should correspond
to the specified level in Table 4-5 (±10 dBm tolerance).
11. Press AUTO SCAN to terminate the scan mode.
12. Enter the next threshold level code to be verified.
13. Press AUTO SCAN and repeat comparison of the signal generator
output to specified threshold level in Table 4-5.
SIGNAL GEN ERATOR
HEWLETT-PACKARD
86408
)CW
REMOTE
INPUT lOUT
POWER
~
,
1
,
~
,
~
FLlJ I A2JI
WJ-8718 SERIES
HF RECEIVER
PUT
Figure 4-2. Scan Threshold Adjustment Setup
4-8