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T.O . 33K8-4-551-1
3 .24 Disconnect the low thermal short from the four TI Input terminals.
3 .25 Perform ACAL on the TI before beginning calibration by pressing the TI keys in the following sequence:
,
use the menu scroll keys
until ACAL ALL is displayed, then
Cal
n
or
F°n m a)
4
5
8
Fhter
3 .26 Upon completion of calibration, annotate the Special block of the Certification Label : Perform ACAL within
24 hours of use or after a 1 °C shift in internal temperature from last ACAL . See copy of attached performance
specifications.
3 .27 Make a copy of Appendix A and submit to the User with the TI.
4 CALIBRATION PROCESS :
NOTE
Unless otherwise specified, verify the results of each test and take corrective action
whenever the test requirement is not met, before proceeding.
4 .1 DC VOLTAGE CALIBRATION:
4.1 .1 Set the TI for DCV, 7 digit display and NPLC at 100 by pressing the TI keys in the following sequence:
ccv
(SHIM
(BLe)
N
7
Ehter
NPLC
1
0
0
EntBr
4 .1 .2 Connect equipment as shown in Figure 1 .
Ti
INPUT
HI O -0
O O
O HI
LO
GRD
NULL DETECTOR
LO O O-
CALIBRATOR
HIO O
0
O O
L0 0
4
DC REFERENCE STANDARD
-O HI L O LO
--0 HI
bL0
O HI O LO
GRD
O O O
DC REFERENCE
DIVIDER
10V
1 .018V CHASSIS
--o
o
O
O
O
10V COM1 .018 COM GUARD
Figure 1 .
19
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