TCPA300 and TCPA400 Amplifier Adjustme nts
Figure 14:
Gain adjustment locations
TCPA400 Amplifier
The TCPA400 has one internal gain adjustment in the amplifier. To make
adjustments to the amplifier, do the following:
1. Set up the circuit shown. (See Figure 13 on page 47.)
2. Set the
current source to the value shown. (See Table 26.)
3. Locate the adjustment on the amplifier board. (See Figure 14.)
4. Adjust the corresponding adjustment pot to within the limits shown. (See
Table 26.)
Tabl
e 26: TCPA400 gain adjustments
Range, A/mV
Current source
value, DC A Adjustm ent
Minimum output,
VDC
Expected output,
VDC
Maximum
output, VDC
1 0.100
25 Ω
2.4938 2.5000 2.5063
This completes the adjustments for the amplifiers. Do the appropriate performance
ve
rification for the amplifier to verify that it meets the warranted specifications.
48 TCPA300/400 Amplifiers and TCP300/400 Series Current Probes Service Manual
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