TCP305 and TCP312 Performance Verification
TCPA300/400 Amplifiers and TCP300/400 Series Current Probes Instruction Manual
5-23
Table 5- 13: DC gain accuracy test for the TCP305 and TCP312
Probe Range
Current source
output (ADC)
Expected
output,
V
E
(VAC)
M1 (VDC) M2 (VDC) M1- M2 (VDC)
% Error,
calculated
TCP305 5A/V ±1.00 A ±1.00 V
±3.00 A ±3.00 V
±5.00 A ±5.00 V
10 A/V ±2.00 A ±1.00 V
±6.00 A ±3.00 V
±10.00 A ±5.00 V
TCP312 1A/V ±0.20 A ±1.00 V
±0.60 A ±3.00 V
±1.00 A ±5.00 V
10 A/V ±1.20 A ±0.60 V
±3.60 A ±1.80 V
±6.00 A ±3.00 V
g. Verify that the measured output (M1--M2) is within the warranted
specification listed in Table 4--1 on page 4--1, by computing %Error as
follows:
%Error =
M
1
− M
2
− 2(V
E
)
2(V
E
)
× 100
For example, you may measure values of 0.990V for M1 and --0.998V
for M2. With an expected V
E
of 1.0V, you compute the %Error as
follows:
%Error =
0.990V − --0.998V
− 2(1V)
2(1V)
× 100
=
1.988V − 2V
2V
× 100 = --0.6%
5. Record the results on the test record.
6. Disconnect the DMM cable from the amplifer and the probe from the 5T
coil.
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