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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