Pulse Response Adjustment - Racal Instruments 3151 User Manual

3151 And 3151A User Manual
Pulse Response
Adjustment
procedures given later in this section.
Perform the following adjustment procedure. If an
adjustment cannot be made to obtain a specific result,
refer to the troubleshooting procedures.
If not otherwise specified, configure the instrument to
factory defaults before each adjustment by sending the
*RST command. Always connect the output BNC
connector through a 50Ω Ω feedthrough termination.
Equipment: Oscilloscope (HP 2465B), 20dB Attenuator
1. Configure the Model 3151/3151A as follows:
Function:
Frequency:
Amplitude:
Remote Commands:
2. Connect the Model 3151/3151A output through 20dB
attenuator to the oscilloscope input.
3. Set the oscilloscope input impedance to 50Ω.
4. Set the oscilloscope vertical gain and time base, and
adjust R36 and C19 for the best pulse response.
5. Change the Model 3151/3151A frequency setting to 10.00
kHz.
6. Set the oscilloscope vertical gain and time base, and
adjust R22 for best pulse flatness.
7. Change the Model 3151/3151A frequency setting to 1.000
kHz and retouch R52 for best flatness in this range.
Repeat Steps 5 and 6 until the best result is obtained in
both steps.
NOTE
Square
1 MHz
10 V
:RES
:OUTP ON
:FUNC:SHAP SQU
:FREQ 10e6
:VOLT 10
Maintenance and Performance Checks 5-15