TB 9-6625-1957-35
a. Performance check
(1) If necessary place dBm/dBV jumper J1435 P1435 (fig. 2) in dBm position.
(2) Press TI dB and -20 dB pushbuttons (in).
(3) Set calibrator for an output of -20 dBm at an output frequency of 10 kHz. If TI
does not indicate within limits specified in first row of table 9, perform corresponding
(4) Repeat technique of (2) and (3) above, using outputs and settings listed in
table 9. If TI
does not
indicate within
limits specified in
table 9, perform corresponding
NOTE
In the following table, interaction may occur in the
adjustments of R1535 and R1528. Also, a flashing display with
the upper segment of the 1 in the most significant digit
followed by a "+" or "-", indicates upper or lower limits of
range.
Calibrator
Test instrument
RANGE/FUNCTION
output
indications
Adjustments
dBm
setting
Min
Max
10 kHz
+0.5
-20
-20 dB
-0.5
dB∅ R1535
0.0
10 kHz
+19.5
+20.5
dB GAIN R1528
-20 dB
10 kHz
---
-40
-20 dB
-21.5
-18.5
1 kHz
+0.5
---
-40
-40 dB
-0.5
+10
20 Hz
0 dB
+9.5
+10.5
---
+10
20 kHz
0 dB
+9.5
+10.5
---
1 kHz
0 dB
---
-17
-17.5
-16.5
5 kHz
0 dB
---
-17
-18.5
-15.5
+22
1 kHz
+20 dB
+1.5
+2.5
---
+45
1 kHz
+40 dB
+4.5
+5.5
---
(5) Reduce calibrator output to minimum.
b. Adjustments. No other adjustments can be made.
a. Performance Check
(1) Connect calibrator OUTPUT HI to TI mA input and calibrator OUTPUT LO to
TI LOW input.
(2) Press TI pushbuttons as listed in (a) and (b) below:
(a) mA DC (in).
(b) 200 A range (in).
(3) Set calibrator for an output of 190 A. TI will indicate within limits specified in