TB 9-6625-2324-35
(33) Adjust calibrator amplitude output adjustment controls until TI indication
equals TI indication recorded in (7) above, then press calibrator NEW REF key.
(34) Set calibrator to 190 kHz and adjust amplitude output adjustment controls
until TI indication equals TI indication recorded in (7) above. Calibrator Error display
indication will be within 0.5 percent.
(35) Set calibrator to 990 kHz and adjust amplitude output adjustment controls
until TI indication equals TI indication recorded in (7) above. Calibrator Error display
indication will be within 0.7 percent.
(36) Set calibrator to 1.5 MHz and adjust amplitude output adjustment controls
until TI indication equals TI indication recorded in (7) above. Calibrator Error display
indication will be within 3 percent.
(37) Set calibrator to 10 MHz and adjust amplitude output adjustment controls
until TI indication equals TI indication recorded in (7) above. Calibrator Error display
indication will be within 5 percent.
b. Adjustments
(1) Adjust calibrator amplitude output adjustment controls for a 0 percent Error
display indication and adjust C13 (fig. 1) until TI indication equals indication recorded in
a(3) above (R).
(2) Adjust calibrator amplitude output adjustment controls for a 0 percent Error
display indication and adjust C33 (fig. 1) until TI indication equals indication recorded in
a(4) above (R).
(3) Repeat a(9) through (16) above as necessary.
(4) Adjust calibrator amplitude output adjustment controls for a 0 percent Error
display indication and adjust R5 (fig. 1) until TI indication equals indication recorded in
a(6) above (R).
10. dB Display Mode
a. Performance Check
(1) Connect calibrator OUTPUT HI and LO to TI INPUT.
(2) Press and release all front panel pushbuttons except POWER.
(3) Press RANGE HOLD/AUTO pushbutton to HOLD and STEP UP
pushbutton to 2 V range.
(4) Set calibrator for a 1 V, 50 kHz output. Adjust calibrator amplitude output
adjustment controls for a 1.000 V indication on TI.
(5) Press DISPLAY dB/VOLTS pushbutton to dB.
(6) Set dBm REFERENCE (Ω ) switch to 50. TI will indicate between +12.99
and +13.01 dB.
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