3152B User Manual
Publication No. 980935 Rev. A
PLL Adjustments
The PLL operation is basic to the sample clock generator. Correct
operation of the PLL circuit ensures the accuracy of the frequency
path as well as the accuracy of the PLL phase. Use this procedure if
you suspect that there is a frequency and/or PLL accuracy issue.
Setup 9
PLL Preparation
Equipment: Counter, Function Generator, "T" Connector, BNC to BNC
cable
Preparation:
1. Configure the counter as follows:
Termination:
50
Ω
DC
Function:
TI A -> B
2. Connect the 3152B output to the counter input A
3. Connect the external function generator to the counter
input B and to TRG/PLL input of 3152B
4. Prepare the external function generator waveform as
follows:
Amplitude
:
TTL
Waveform:
Square
Frequency : 10 kHz
5. Configure the 3152B as follows:
Function
Mode: Arbitrary
Wavelength:
1000 points
Waveform:
Square
Run
Mode:
PLL
6. Set CAL:SETUP 61
7. Set CAL:VAL 120
Adjustment:
1. Set CAL:SETUP 63
Setup 10
Phase “0”
Equipment:
Counter, Function Generator, "T" Connector, BNC to BNC
cable
Preparation:
1. Configure the counter as follows:
Termination:
50
Ω
DC
Function:
TI A -> B
2. Connect the 3152B output to counter input A
3. Connect the external function generator to counter input B and to
TRG/PLL input of the 3152B
4. Prepare the external function generator waveform as follows:
Amplitude
:
TTL
7-8 Adjustments and Firmware Update
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