User Manual

Performance Ver
ification
DC Attenuation Accuracy
This test checks the probe gain by measuring known voltages with a multimeter. The probe is then used to measure the
same voltages, and then a comparison calculation is made.
Preparation
1. Press the VAR/
0v button to the off position on the 1103 power supply (the button is not lighted).
2. Set the probe to the 42 V range (÷ 50), DC reject off, and full bandwidth.
3. Connect the MicroCKT test tips to the D C source. Observe proper polarity: red to (+), black to (–).
4. Connect a DMM to the DC source and set the DMM to DC volts.
5. Connect the BNC cable to the output connector of channel 1 on the 1103 power supply.
6. Connect the Precision BNC terminator (011-0129-XX) to the second DMM using a BNC-to-dual banana adapter .
7. Connect the other end of the BNC cable to the Precision BNC terminator.
Verification
42 V Range (÷ 50).
8. Set the input voltage on the DC source to approximately 40 V. Record the actual voltage as V
in
1.
9. Record the output voltage as V
out
1.
10. Set the input voltage on the DC source to approximately 20 V. Record the actual voltage as V
in
2.
11. Record the output voltage as V
out
2.
12. Set the input voltage on the DC source to approximately 5 V. Record the actual voltage as V
in
3.
13. Record the output voltage as V
out
3.
20 P6250 & P6251 Technical Reference