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(c) Connect the output of an HF transmitter to the AT-AUTO
(d) Apply an approximate 100 W CW carrier to the AT-AUTO
(e) Adjust the FOR LO potentiometer (Figure 10.1, page 92) so that the AT-
AUTO
's forward power indication matches that shown on the calibrated Wattmeter.
(tm)
7. Calibrate the low-range PEAK forward power display
(a) Set the AT-AUTO
(b) Apply an approximate 100 W CW carrier to the AT-AUTO
(c) Adjust the PEAK LO potentiometer (Figure 10.1) so that the AT-AUTO
forward power indication matches that shown on the calibrated Wattmeter.
8. Calibrate the high-range PEAK forward power display
(a) Set the AT-AUTO
(b) Apply an approximate 500-1000 W CW carrier to the AT-AUTO
(c) Adjust the PEAK HI potentiometer (Figure 10.1) so that the AT-AUTO
forward power indication matches that shown on the calibrated Wattmeter.
9. Calibrate the high-range AVG forward power display
(a) Set the AT-AUTO
(b) Apply an approximate 500-1000 W CW carrier to the AT-AUTO
(c) Adjust the FOR HI potentiometer (Figure 10.1) so that the AT-AUTO
forward power indication matches that shown on the calibrated Wattmeter.
10. Reverse the AT-AUTO
AT-AUTO
coaxial output, connect AT-AUTO
(tm)
which terminates into a 50 Ω dummy load.
11. Calibrate the high-range reflected power display
(a) Apply an approximate 20-50 W CW carrier to the AT-AUTO
(b) Adjust the REV HI potentiometer (Figure 10.1) so that the AT-AUTO
reflected power indication matches the forward power displayed on the calibrated
Wattmeter.
12. Calibrate the low-range reflected power display
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Wattmeter to read PEAK power.
(tm)
Wattmeter to the 3000 W power range.
(tm)
Wattmeter to read AVG power.
(tm)
coaxial input and output (connect transmitter output to
(tm)
RF input.
(tm)
.
(tm)
.
(tm)
coaxial input to calibrated Wattmeter,
(tm)
(tm)
91
's
(tm)
.
(tm)
's
(tm)
.
(tm)
's
(tm)
.
's
(tm)
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