TCPA300 and TCPA400 Amplifier Adjustments
TCPA300/400 Amplifiers and TCP300/400 Series Current Probes Instruction Manual
6-5
12.5 Ω (10 A/V)
5
Ω (50 A/V)
5
Ω Comp (10A/V and 50 A/V)
TCPA300 Adjustments
TCPA400
only; 25 Ω
25 Ω Comp(5 A/V)
Figure 6- 2: 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 in Figure 6--1 on page 6--4.
2. Set the current source to the value shown in Table 6--4 and adjust the
corresponding adjustment pot to within the limits shown in Table 6--4. Use
Figure 6--2 to locate the adjustment on the amplifier board.
Table 6- 4: TCPA400 gain adjustments
Range, A/mV
Current source
value, DC Amps
Adjustment
Minimum
output, VDC
Expected
output, VDC
Maximum
output, VDC
1 0.100 25Ω 2.4938 2.5000 2.5063
This completes the adjustments for the amplifiers. Do the appropriate perfor-
mance verification for the amplifier to verify that it meets the warranted
specifications.
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