TB 9-6625-1356-24
indicates 10.0 MHz and multimeter indicates -370 mV (R).
NOTE
If TI will not oscillate, adjust S1C10 (fig. 2) slightly.
(18) Turn FREQUENCY dial to 1.
counter indicates 1.0 MHz: and multimeter indicates -350 mV (R).
NOTE
Repeat (16) and (17) above if S1C5 and/or A2C5 were adjusted
in (19) above.
(20) Turn FREQUENCY dial to 5.
(21) Adjust S1C10 (fig. 2) until frequency counter indicates 5.0 MHz and multimeter
indicates -310 mV (R).
(22) Repeat (16) through (21) above until no further adjustment is required.
(23) Set FREQUENCY RANGE switch to X100K and turn FREQUENCY dial to 10.
(24) Adjust S1C4 and S1C9 (fig. 2) until frequency counter indicates 1.00 MHz and
multimeter indicates -275 mV (R).
9. Output Voltage, Meter Tracking and Expanded Scale
a. Performance Check
(1) Connect multimeter to TI, using a 50 feedthrough termination.
(2) Set FREQUENCY RANGE switch to X100 and turn FREQUENCY dial to 4.
(3) Rotate AMPLITUDE controls fully cw. Multimeter will indicate at least 3.16 V ac.
(4) Adjust AMPLITUDE controls for a 3 V indication on TI meter. If multimeter
does not indicate between 2.94 and 3.06 V ac, perform b (1) and (2) below.
(5) Repeat technique of (4) above for TI meter indications listed in table 4.
Multimeter will indicate within limits specified.
Table 4. Meter Tracking
Test instrument
Multimeter indications
meter indications
(V ac)
(0 to 3 scale)
Min
Max
2.5
2.44
2.56
2.0
1.94
2.06
1.5
1.44
1.56
1.0
0.94
1.06
0.5
0.44
0.56
NOTE
Perform (6) and (7) below for Model 652A only.
