VXI VT1422A - Manual (Page 466)

464 VT1529A/B Verification & Calibration Appendix C
The circuit diagram for the dummy load is:
Tests
Remote calibration (CAL:REMOTE? command) performs calibration against
the Remote Cal signal from the VT1422A which is traceable to a standard.
The procedures in the Verification section test functional performance.
They do not test the performance compared to specifications.
The assumed conditions for the performance verification tests are based on
the following specifications/conditions:
• Minimum 1 hr warm-up for the VT1422A, VT1529A/B and Voltage Source.
• Test environment temperature 23 °C ± 1 °C.
• Linearity = ± 0.01% of reading (90-day specifications)
• *CAL? command executed before measurements. Executing CAL:TARE
automatically executes *CAL?.
• CAL:ZERO? executed within five minutes after *CAL?.
Verification
The purpose of the verification tests is to verify that the VT1529A/B is
functioning properly. Functional verification tests include:
-- Test V-1: Self-Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 465
-- Test V-2: Cal Remote . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 465
-- Test V-3: Sense Out. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 466
-- Test V-4: Bridge Resistors. . . . . . . . . . . . . . . . . . . . . . . . . page 467
-- Test V-5: Dynamic Strain Output Port . . . . . . . . . . . . . . . page 469
-- Test V-6: Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 471
-- Test V-7: Shunt Cal Resistor Port . . . . . . . . . . . . . . . . . . . page 474
-- Test V-8: Internal Shunt . . . . . . . . . . . . . . . . . . . . . . . . . . page 475
Figure C-1. Dummy Load Circuit
RJ-45 Connector
10k
7.5k
20k
NC
RCAL
Excitation Sense
Notes:
Resistors are 0.1% tolerance
Connector is L-COM TPS3088 or equivalent
Wire is stranded 24 AWG, L-COM TDB8-X00 or equivalent
Excitation
1 +
2 –
3 +
4
5 +
6
7 +
8
–
–
–
Sense