TB 9-6625-160-24
Difference Limits % =
Table 12. Source Flatness.
value recorded in step
-
Hz recorded REF table
Source
Recorded value in
1000 Hz recorded REF
(V)
(Hz)
Difference limits (%)
step (40)
from table 11
6
1k
REFERENCE
20
0.7
20 k
0.7
50 k
2.5
100 k
2.5
0.7
1k
REFERENCE
20
0.7
20 k
0.7
50 k
2.5
100 k
2.5
0.07
1k
REFERENCE
20
0.7
20 k
0.7
50 k
2.5
100 k
2.5
0.007
1k
REFERENCE
20
0.7
20 k
0.7
50 k
2.5
100 k
2.5
0.0007
1k
REFERENCE
20
0.7
20 k
0.7
50 k
2.5
100 k
2.5
(44) Set TI SOURCE AMPTD to 0 V and disconnect test setup.
b. Adjustments
NOTE
Perform paragraph 17 (Internal Reference Frequency
Adjustment) prior to any other adjustments as this has an
effect on all remaining adjustments. If already performed,
proceed as outlined below.
(1) Remove top cover of TI; A2 board is located towards front of TI.
(2) On TI, key in 41.0 SPCL to initialize instrument. Set INPUT switch to ground.
Set LP FILTER off. Key in 1.10 SPCL to set input to 4.76 V range.
(3) Set CALIBRATOR for 4.5 V rms at 1 kHz and connect CALIBRATOR to TI
HIGH INPUT.
(4) Set CALIBRATOR to OPR, TI right display should read between 4.4 and 4.6 V.
Press TI RATIO key.
18