Tektronix TCPA300 SERIES, Instruction Manual

Page: 144 / 205

TCP305 and TCP312 Adjustments
6- 8
TCPA300/400 Amplifiers and TCP300/400 Series Current Probes Instruction Manual
TCP305 and TCP312 DC Gain Adjustment
Use the following procedure to adjust the DC Gain of the TCP305 and TCP312
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.
Connect the 5-turn DC current loop to the current source as shown in
Figure 6--4 on page 6--9.
4. Do not clamp the current probe around any conductor, but make sure the
slide is locked.
Make or verify the equipment settings in Table 6--6:
Table 6- 6: Settings for DC gain adjustment
Digital multimeter
Measurement Type AC volts
Range Autoranging
Current source
Output waveshape/frequency Square wave, 40 Hz
Output Off
TCPA300
Coupling DC
Range: TCP305 5 A/V
TCP312 1 A/V
Equipment Connections
Equipment Settings