TB 9-6625-2342-35
(4) Set calibrator (John Fluke, Model 5720A) for .500 V and set TRIGGER. Crt will
display message RUNNING. After approximately 3 to 5 seconds crt will display message
CONNECT...TO 2.0 V.
(5) Set calibrator (John Fluke, Model 5720A) for 2.00 V and set TRIGGER. Crt will
display message RUNNING.
NOTE
After successful completion of above sequence, crt will display
PASS message above option TRIGGER.
If a FAIL is
displayed, verify test setup and repeat o (1) through (5) above.
If FAIL message is still displayed, corrective action is
necessary.
(6) Crt will display message PASS and above option TRIGGER. Disconnect test
setup.
p. Perform (1) through (4) below for ramp (REPET).
NOTE
REPET calibration adjusts timing of jitter correction
amplifiers so that waveform samples are correctly placed with
respect to trigger point in repetitive acquisition mode.
(1) Press MENU OFF/EXTENDED FUNCTIONS pushbutton two times.
(2) Set CAL/DIAG.
(3) Set EXT CAL to display EXT CAL menu.
(4) Set REPET. Crt will display RUNNING and then display PASS or FAIL. If
needed.
NOTE
With jumper J156 (fig. 1) removed, calibration constants stored
in TI firmware will be lost when power is applied and must be
reestablished by performing this procedure completely.
(1) Press TI POWER-ON-OFF switch to OFF (out) and remove cabinet from TI.
(2) Replace jumper (J156) (fig. 1) on P156 on side board (located on right side of
instrument near rear panel).
(3) Replace cabinet on TI.
15. Final Procedure
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.
