TB 9-6625-2251-35
NOTE
Crt may display a PASS indication for SELF CAL option.
Step o below should still be performed to update stored
information and prepare test instrument to respond to further
testing.
j. Set: SELF CAL. Crt will display message RUNNING. After 10 to 15 seconds
message will be replaced by PASS directly above SELF CAL option.
k. Press and release MENU OFF/EXTENDED FUNCTION pushbutton two times to
display EXT FUNCT options on crt.
l.
Set: CAL/DIAG to display options on crt.
m. Set: EXT CAL to display options on crt.
n. Set: ATTEN and perform (1) through (8) below to establish attenuator gain DAC
voltage reference levels.
(1) Crt will display message CONNECT CH 1 TO 0.2 VDC.
(2) Set calibrator (John Fluke, Model 5720A) to 0 V output and connect to TI CH 1
input.
(3) Set calibrator (John Fluke, Model 5720A) for .200 V output.
(4) Set: ATTEN. Crt will display message RUNNING. After approximately 3 to 5
seconds message will change to CONNECT CH 1 to 2.0 VDC.
(5) Set calibrator (John Fluke, Model 5720A) for 2.00 V output and set: ATTEN.
Crt will display message RUNNING. After approximately 3 to 5 seconds message will
change to CONNECT CH 1 TO 20 VDC.
(6) Set calibrator (John Fluke, Model 5720A) for 20 V and Set: ATTEN. Crt will
display message RUNNING. After approximately 3 to 5 seconds message will change to
CONNECT CH 2 TO 0.2 VDC.
(7) Set calibrator (John Fluke, Model 5720A) for 0 V output and to standby mode
and move connection on TI from CH 1 input connector to CH 2 input connector.
(8) Repeat technique of (3) through (6) above for CH 2, changing calibrator (John
Fluke, Model 5720A) to appropriate settings.
NOTE
After successful completion of above sequence, crt will display
PASS message above option ATTEN. If a FAIL message is
displayed, verify test setup and repeat n(1) through (8) above.
If FAIL message is still displayed, corrective action is
necessary.
(9) Crt will display message PASS above option ATTN. Disconnect test setup.
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