TB 9-6625-2304-35
b. Adjustments. No adjustments can be made.
Multimeter indications
Test instrument
(mV dc)
Nominal value
Resistor
Min
Max
(mΩ)
R2
10.0
9.9490
10.0510
R3
20.0
19.8980
20.1020
R4
20.0
19.8980
20.1020
R5
20.0
19.8980
20.1020
R6
20.0
19.8980
20.1020
R7
20.0
19.8980
20.1020
R8
60.0
59.7000
60.3000
12. Thermal Converter
a. Performance Check
NOTE
The TI thermal converter will have to be disconnected from the
internal connections (including the T-connector) before
connecting as described in (1) below.
(1) Connect TI's thermal converter output (P2/J2 of TC1) (after being disconnected
from internal connections) to multimeter and TI thermal converter input (P1/J1 of TC1) to
calibrator.
(2) Set calibrator for a 1.0 V dc output. Allow approximately 30 minutes for thermal
converter stabilization.
NOTE
Thermal converter in (2) above should be covered, so as to
shield from changing air currents.
(3) Record multimeter indication; then reverse polarity of calibrator output. Record
multimeter indication again. If the two indications are not equal, average them and record
value as DC Reference.
(4) Set calibrator frequency to 25 Hz. Using output adjustment control, adjust
calibrator amplitude for a multimeter indication equal to value recorded as Dc reference
(0.5 V). Calibration Error indication will not exceed + 1.0%.
(5) Repeat technique of (4) above for 50 Hz, 20 kHz, 60 kHz, 175 kHz and 750 kHz.
Calibrator Error indication will not exceed + 1.0%.
b. Adjustments. No adjustments can be made.
1
CHANGE 1 9
