TB 9-6625-162-24
(4) For the 20/200 model set the TI for 200 Ω; the 40/400 auto ranging model will
default to 400 Ω. TI will indicate within limits specified in the first row of table 6. If TI
does not indicate within limits specified in table 5, perform b below.
(5) Repeat technique of (3) and (4) above, resistance standard settings, TI ranges
does not indicate within limits specified in table 6, perform b below.
Table 6. Resistance Accuracy.
Test instrument
Resistance
Range (Ω)
Standard
Min
Max
(Ω)
(Ω)
(Ω)
200, 1500
400, 4000
100
200
400
98.3
101.7
150
200
400
147.6
152.5
175
200
---------
172.2
177.8
400
--------
400
393.8
406.2
500
1500
---------
491
510
1000
1500
4000
983
1017
1500
1500
----------
1476
1525
2000
----------
4000
1962
2032
3000
----------
4000
2953
3047
4000
---------
4000
3938
4062
(6) Set calibrator output to minimum.
b. Adjustments (20/200 Model Only)
Set the TI range to 200 Ω.
1.
Set the resistance standard for 190 Ω.
2.
Turn VR (11) so that 190.0 is indicated on the LCD.
3.
13. Dc Current
a. Performance Check
CAUTION
Do not apply current to Coil any longer than necessary to
complete the calibration. The manufacturer recommends a
maximum of 2 minutes on with 8 minutes off for greater than
11 amps.
CAUTION
Ensure the connections on the Ammeter Calibrator are tight
enough to engage the center pin. DO NOT OVER TIGHTEN or
damage could occur.
NOTE
When verifying the DC Current functions, some TIs may
indicate a reverse polarity. At the discretion of the technician,
reverse the connection of the TI to the coil, or reverse the
polarity of the Meter Calibrator output, to achieve the correct
indications.
