TB 9-6625-2185-24
(10) Connect sensor to synthesizer/level generator 50: output.
(11) Press pushbuttons 0, RANGE HOLD, 39.80, MODE dB.
(12) Wait 30 seconds for settling and press pushbuttons 0, dB LIMITS HI, CAL,
REF LVL dB. Record display indication (approximately 5000) as range 0 gain.
(13) Repeat technique of (9), (11), and (12) above for synthesizer/level generator
output, TI pushbuttons and record display indications as listed in table 4 below.
Table 4. Full Scale Gain Data
Synthesizer/level
generator set to 50
Allow
Record
MHz (dBm)
Press
settings
Press
display
-24
1, RANGE HOLD, 3,
---
0,dB LIMITS HI,
Range 1 =
9, ., 8, 0, MODE dB
CAL, REF LVL dB
approximately 5000
-14
2, RANGE HOLD, 3,
---
0,dB LIMITS HI,
Range 2 =
9, ., 8, 0, MODE dB
CAL, REF LVL dB
approximately 5000
-4
3, RANGE HOLD, 3,
---
0,dB LIMITS HI,
Range 3 =
9, ., 8, 0, MODE dB
CAL, REF LVL dB
approximately 5000
+6
4, RANGE HOLD, 3,
---
0,dB LIMITS HI,
Range 4 =
9, ., 8, 0, MODE dB
CAL, REF LVL dB
approximately 5000
(14) Set synthesizer/level generator to STANDBY, allow sensor to settle for 30 seconds.
(15) Set control board bit switch to OPERATE MODE (fig. 3).
(16) Press pushbuttons RANGE AUTO, MODE PWR, and ZERO (cc03 when complete).
(17) Turn synthesizer/level generator to ON and position controls for 50 MHz, -30
dBm output. Record display indication as range 1 downscale reading.
(18) Compute downscale sensor correction as follows: Subtract downscale reading
recorded in (17) above from 1.000 PW.
NOTE
Disregard decimals; always use whole numbers when
computing downscale correction.
Example: 1.000 PW minus downscale reading of 1.008 PW
equals a downscale of -8.
(19) Record calculated value as range 1 down scale correction.
(20) Repeat technique of (17) through (19) for synthesizer/level generator settings
and record corrections as listed in table 5.
12