Download Model 1281A

1281A
User Manual
Setup 3
Power Amplifier Baseline Offset
Equipment: DMM, SMA to BNC cable, 50 Ω Feedthrough termination,
BNC to dual banana adapter
Preparation:
1. Configure the DMM as follows:
Function:
DCV
Range:
100 mV
2. Connect the WW1281A Normal output to the DMM input.
Terminate the 1281A output at the DMM input with the, 50 Ω
Feedthrough termination
3. Configure the 1281A as follows:
CAL:SERV:
0
Output:
On
Freq:
1 MHz
Amplitude:
50 mV (100 V with option 2)
Adjustment:
1. Adjust CAL:SETUP 3 for DMM reading of 0V, ± 2 0 mV. Note the
reading.
2. Move the cable from the NORMAL to the INVERTED output and
repeat the adjustment.
3. Repeat adjustments 1 and 2 until the error is the balanced
between the outputs.
Setup 4
Pre-Amplifier Baseline Offset - Arbitrary
Equipment: DMM, SMA to BNC cable, 50 Ω Feed through termination,
BNC to dual banana adapter
Preparation:
1. Configure the DMM as follows:
Function:
DCV
Range:
100 mV
2. Connect the 1281A Normal output to the DMM input. Terminate
the 1281Aoutput at the DMM input with the, 50Ω Feed through
termination
3. Configure the 1281A as follows:
Output:
On
Freq:
1 MHz
Amplitude:
2 V (4 V with option 2)
CAL:SERV
0
Adjustment:
1. Adjust CAL:SETUP 4 for DMM reading of 0 V, ±20 mV. Note the
reading.
2. Move the cable from the NORMAL to the INVERTED output and
repeat the adjustment.
3. Repeat adjustments 1 and 2 until the error is the balanced
between the outputs.
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