TB 9-4920-464-24
(3) Turn TI POWER switch to the On position and allow TI to warm-up for 15 minutes.
(4) Set TI PARAMETER SELECTOR switch to IPRI and set calibrator output for
0.450 V at 5985 Hz. If TI does not indicate within limits specified in first row of table 3,
perform b below.
(5) Repeat technique of (4) above, using settings and indications listed in table 3. If
TI does not indicate within limits specified in table 3, perform b below.
Table 3. AC Voltage Accuracy
Calibrator output
Test instrument indications
Amplitude
Parameter selector switch position
Min
Max
IPRI
0.450
V
5985
Hz
0.4470
0.4530
0.460
V
0.4570
0.4630
0.470
V
0.4670
0.4730
VPRI
0.85
V
84.700
85.300
0.95
V
94.700
95.300
1.05
V
104.70
105.30
VPRI
1.05
V
6000
Hz
104.70
105.30
0.95
V
94.700
95.300
0.85
V
84.700
85.300
IPRI
0.470
V
0.4670
0.4730
0.460
V
0.4570
0.4630
0.450
V
0.4470
0.4530
IPRI
0.450
V
6015
Hz
0.4470
0.4530
0.460
V
0.4570
0.4630
0.470
V
0.4670
0.4730
VPRI
0.85
V
84.700
85.300
0.95
V
94.700
95.300
1.05
V
104.70
105.30
(6) Set calibrator output to minimum and disconnect from TI.
(7) Reconnect wires removed in step a (1) above.
b. Adjustments
(1) Remove all connectors from rear of TI AC VOLTMETER and remove cover from
rear of meter.
(2) Remove the front panel lockout jumper a from the power supply board as
shown in figure 2 below.
Figure 2. Power supply board.
(3) Re-install rear cover and connectors to TI AC VOLTMETER.
(4) Apply input power to TI.
5
