Adjustment procedures
AFG31000 Series Arbitrary Function Generator Service Manual
36
Delay IC adjustment
This procedure adjusts the value of each bit of delay IC.
1. Connect the AFG31000 to the oscilloscope DPO70k as shown as in the following figure.
Figure 15: Delay IC adjustment
2. Push Default and OK to recall the arbitrary function generator default setup.
3. Push CH1->square->1MHz.
4. Push Default to recall the oscilloscope to the default setup.
5. Set up the oscilloscope using the following steps:
Select menu Setting Operation
Align the baseline of each channel
Horizontal position
6. Select Horiz/Acq->Horizontal/Acquisition Setup-> Acquisition->64 to set sample mode as 64
times/Average as well as Sampling Models as ET.
7. Select Measure>Measurement Setup->Time->Delay, to set source1 Ch1 and source2 Ch2 to
Rising edge.
8. Select Vertical>Vertical Setup>Channel>deskew to adjust the Ch2 Deskew time to positive
edge align.
9. Change the Horizontal Resolution to 1.0TS/s.
10. Connect to the DUT through Visa.
11. Send the PI command: MSERvice:DELYchip:BIT BITREF to the DUT.
12. Write down the skew time of two signals from the oscilloscope screen, BITREF Trefp.
13. Send the PI command: MSERvice:DELYchip:BIT BIT0 to the DUT.
14. Write down the skew time of two signals from the oscilloscope screen, as the first bit value BIT0
T0p.
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