TB 9-4931-537-35
e. When a standard fails a cross-check and is determined to be unserviceable, the
cross-check readings must be recorded in appropriate table. The only exception
permitted is when the standard is inoperative. In such cases the designator INOP. will
be placed in the space provided for the cross-check readings, and an explanation noted
at the foot or back of cross-check table.
f. When a standard fails between required cross-checks, an entry will be made in
the next available column of the table, with the date of failure discovery and actions
taken in accordance with d and e above.
g. At the
completion of the
calibration loop the
organizational chief will
ensure that
all cross-check records are reviewed and any required corrective action is accomplished.
Cross-check records must be retained for at least 2 years and then may be destroyed.
Upon request, a copy of the records will be forwarded to USATA.
10. Reports .
Cross-check tables will be
reproduced locally. All
results of
cross-checks
must be recorded in appropriate table and signed as listed in table. Inclusive dates may
be annotated on a single line if a cross-check takes more than 1 day.
SECTION II
CROSS-CHECK DATA
11. Cross-Check Procedures
a. Ensure
amplifier is properly
connected to
calibrator.
b. Set POWER switches to
ON and allow at
least 4
hours warm up for
multimeter
and 30 minutes warm up for amplifier and calibrator.
WARNING
The calibrator/amplifier is capable of supplying lethal
voltages. Do not make connections to the output terminals
when any voltage is present. Placing the calibrator in
STANDBY may not be enough to avoid shock hazard,
since the OPR/STBY pushbutton could be pressed
accidentally. Press the RESET pushbutton and verify
that STANDBY is lit before making connections to
OUTPUT terminals.
(1) With nothing connected to Input terminals, perform ACAL ALL function on
multimeter by pressing Auto Cal ⇓ (until ALL appears) ,, 3, 4, 5, 8 and ENTER
pushbuttons