Tektronix TCPA300 SERIES, Instruction Manual

Page: 113 / 205

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 5 A/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 1 A/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
=
0.990 V
−
--0.998 V
−
2(1 V )
2(1 V )
×
100
=
1.988 V
−
2 V
2 V
×
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.