Tektronix TCPA300 SERIES, Instruction Manual

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TCP303 and TCP404XL Adjustments
6- 18
TCPA300/400 Amplifiers and TCP300/400 Series Current Probes Instruction Manual
DC Gain Adjustment
This procedure adjusts the DC gain accuracy of the TCP303 and TCP404XL
probes.
1. Connect the amplifier OUTPUT to the DMM input using a BNC-to-Dual
Banana connector, 50
Ω
BNC cable, and a 50
Ω
precision feedthrough
termination. Do not connect the termination at the amplifier output.
2. Connect the current probe to the amplifier PROBE INPUT connector.
3.
If you are adjusting a TCP303, connect the banana lead cable to the output
connectors of the AC current source. If you are adjusting a TCP404XL,
connect the 5-turn DC current loop to the current source as shown in
Figure 6--7.
4.
Do not clamp the current probe around any conductor, but make sure the
slide is locked.
Current source
+ -- Output
Current flow
DMM
+ --
5 Turns
BNC-to
-dual
banana
adapter
50
Ω
Termination
50
Ω
Coaxial cable
TCP404XL probe
Current source
+ --
1 Turn
TCP303 probe
Figure 6- 7: DC gain accuracy adjustment setup
Equipment Connections