3156B User Manual
Maintenance and Performance Checks 6-20
Racal Instrument © 2005
Modulated
Waveforms
Characteristics
FSK
Equipment
: Oscilloscope (LeCroy LT342, fitted with jitter package)
Preparation
:
1. Configure the oscilloscope as follows:
Time Base:
0.1 ms
Sampling Rate: 50MS/s at least.
Trace A View: Jitter, Type: FREQ, CLK.
Trigger source: Channel 2, positive slope
Amplitude:
1V/div
2. Connect 3156B Channel 1 output to the oscilloscope input,
channel 1
3. Connect the 3156B SYNC output to the oscilloscope input,
channel 2
4. Configure the 3156B channels 1/2 as follows:
Reset
Wave Mode: Modulation
Modulation Mode: FSK
CW
Frequency:
2MHz
Shift
Frequency:
4MHz
Baud
Rate: 10kHz
Sync:
On
Output:
On
Enable:
On
5. Using WaveCAD, prepare and download 10-step FSK list with
alternating “0” and “1”
Test Procedure
1. Verify FSK operation on the oscilloscope as follows:
Waveform: Squarewave
Period:
0.1ms
Max
A:
4MHz
Min
A:
2MHz
Test Results
Pass
Fail
2. Remove the cable from 3156B channel 1 and connect to chan 2
3. Repeat the test procedure as above for channel 2
Test Results
Pass
Fail
Содержание 3156B
Страница 5: ......
Страница 6: ...This page was left intentionally blank...
Страница 50: ...3156B User Manual Configuring The Instrument 2 6 Racal Instrument 2005 This page was left intentionally blank...
Страница 119: ...3156B User Manual Racal Instrument 2005 WaveCAD 4 27 Figure 4 11 The FSK Data Table...
Страница 370: ...3156B User Manual Maintenance and Performance Checks 6 42 Racal Instrument 2005 This page was left intentionally blank...
Страница 374: ...3156B User Manual Product Support 7 4 Racal Instrument 2005 This page was left intentionally blank...