ASA 312 Network Information Computer Calibration Manual
DS1 and Frequency Adjustment Calibration
Draft 1 — DLI Proprietary Information 4/15/02
2-5
Function Generator
Settings
Configure the function generator to the following settings. Refer to the function
generator’s user documentation for specific operation.
■
Sine wave output
■
0V DC offset
■
3Vp (6 Vp-p) amplitude
■
772 KHz ± 10 KHz
Calibrating DS1
The following procedures describe how to calibrate a total of eight ranges for DS1
calibration. During these procedures, you will:
■
First calibrate the positive and negative peak values for Range 1
■
Repeat these procedures to calibrate the remaining six ranges
(Range 2, Range 4, Range 8, Range 16, Range 32, and Range 64).
To set DS1 Range 1:
1. Set the oscilloscope’s Volts/Division to 1 V.
NOTE
➤
For subsequent DS1 Range settings, use the corresponding value that
appears in the Oscilloscope (V/Div.) column in Table 2-1.
2. Adjust the frequency generator so that the positive peak voltage output is
within the range of 2.98 Vp and 3.02 Vp.
NOTE
➤
For subsequent DS1 Range settings, use the corresponding minimum and
maximum Vp values that appear in Table 2-1.
3. Using the oscilloscope, measure and record the absolute positive and
negative peak values.
4. From the ASA 312 Touch Screen:
– Press the
Settings
Function Group button.
– Press
CAL.
Table 2-1. Function Generator Voltage Outputs and Oscilloscope Vertical Settings
DS1 Range
Minimum (Vp)
Maximum (Vp)
Oscilloscope (V/Div.)
1
2.98
3.02
1 V
2
1.49
1.51
500 mV
4
0.595
0.605
200 mV
8
0.295
0.305
100 mV
16
0.195
0.205
50 mV
32
0.095
0.105
50 mV
64
0.048
0.053
20 mV
➤
➤
