DS3 Calibration
Document No. RF 002331D
3-8
Calibrating DS3 High
IMPORTANT
➤
Some units may need to be calibrated with a DS3 High signal greater than the
ASA 312’s DS3 High signal level. In these cases, another piece of testing
equipment with an output signal up to 1.2 volts peak must be used.
Use the following procedures to calibrate DS3 High settings:
1. Using the oscilloscope, measure and record the positive and negative peak
values.
2. From the ASA 312 Touch Screen:
– Press the
Settings
Function Group button.
– Press the
CAL
button.
3. Press the
DS3 Pos Peak
command, and use the Touch Screen keypad to enter
the measured DS3 positive peak adjustment value.
4. Press
Enter
to accept the new value.
5. Press the
DS3 Neg Peak
command, and use the Touch Screen keypad to enter
the measured DS3 negative peak adjustment value.
6. Press
Enter
to accept the new value.
If these values are not accepted by the ASA 312, use testing equipment with
an output signal up to 1.2 volts peak. Calibrate using a value range between
0.96 to 1.2 volts peak until the ASA 312 accepts a value.
This concludes DS3 High calibration.
After performing this calibration, you can save the new values using the
procedures described later in Chapter 6, Saving Calibration Values and
Passwords, or you can proceed to the next calibration section.
➤
