Publication No. 980935 Rev. A
3152B User Manual
Waveform:
Square
Frequency : 10 kHz
5. Configure the 3152B as follows:
Function
Mode: Arbitrary
Wavelength:
1000 points
Waveform:
Square
Run
Mode:
PLL
Adjustment:
1. Adjust CAL:SETUP 62 for counter reading of 0
±
500 ns
Setup 11
Phase Fine “0”
Equipment: Counter, Function Generator, "T" Connector, BNC to BNC
cables
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 an external function generator to counter input
B and to the 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
Fine Phase Offset: +30
°
Adjustment:
1. Adjust CAL:SETUP 61 for a counter reading of 8.33
μ
s
±
500ns
2. Repeat Setup 10 and Setup 11 until the errors are balanced
between the steps.
Oscillator
Adjustments
Use this procedure to adjust the reference oscillator and gated
oscillator. These oscillators determine the accuracy of the output
frequency and timing functions so, if you suspect that there is an
accuracy issue, proceed with the calibration of the oscillators. Note
that (Setup 50MHz) is marked as a factory adjustment and, therefore,
it is not normally required during normal calibration cycles except
when the gated oscillator accuracy does not meet the published
specification limit or after a repair has been executed on this circuit.
EADS North America Test and Services
Adjustments and Firmware Update 7-9
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