TB9-6625-2350-35
(c) Calibrator SENSE HI to TI Ω SENSE HI.
(d) Calibrator SENSE LO to TI Ω SENSE LO.
(3) Set calibrator for a 0 Ω nominal output (EXT SNS: ON and 2-wire comp: OFF).
(4) Press TI REL pushbutton and ensure TI REL annunciator is displayed (leave
TI in REL mode for entire resistance performance check).
(5) Displayed indication will be 000.000.
(6) Change calibrator output to 190 Ω nominal.
(7) Rotate calibrator knob below EDIT FIELD pushbutton to adjust calibrator
display indication to equal TI indication. If calibrator Err display indication is not within
limits specified in first row of table 5, perform b below.
(6) Repeat technique of (1) (c), (6) and (7) above, using calibrator outputs in table 5.
If calibrator Err display indication is not within limits specified in table 5, perform b below.
Test instrument
Calibrator
Range
Nominal output
Err indication
(%)
200 Ω
190 Ω
.105
2 kΩ
1.9 kΩ
.105
20 kΩ
19 kΩ
.055
200 kΩ
190 kΩ
.055
1
2 MΩ
1.9 MΩ
.210
1
20 MΩ
19 MΩ
.210
Appropriate range selected automatically in MΩ.
1
(7) Set calibrator output to minimum and disconnect equipment setup.
b. Adjustments
(1) Connect calibrator to TI as follows:
(a)
Calibrator OUTPUT HI to TI INPUT HI.
(b)
Calibrator OUTPUT LO to TI INPUT LO.
(c)
Calibrator SENSE HI to TI Ω SENSE HI.
(d)
Calibrator SENSE LO to TI Ω SENSE LO.
(2) Set CALIBRATION switch on TI rear panel to ENABLED.
(3) Press TI REL and dB pushbuttons simultaneously and ensure TI C annunciator
is displayed.
(4) Press TI 200 range pushbutton (in position).
(5) Set calibrator for a 0 Ω nominal output (EXT SNS: ON and 2-wire comp: OFF).
(6) Press TI REL pushbutton and ensure TI REL annunciator is displayed.
(7) Displayed indication will be 000.000.
(8) Change calibrator output to 190 Ω nominal.
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