3-1
3
DS3 Calibration
Overview
This chapter describes procedures for calibrating the DS3 Test Set for
Terminated, Monitor, and High signals.
DS3 Terminated Positive and Negative Peak
Settings
The following section describes the equipment and procedures required to
calibrate a DS3 Terminated signal.
Review these procedures before attempting to calibrate DS3 Terminated
parameters.
Required Equipment
The following equipment is required to perform DS3 Terminated calibration:
■
ASA 312
■
Digital oscilloscope
■
BNC T-connector
■
Two 2-ft., 75-ohm coaxial cables with male BNC connectors
Hardware Setup
The following describes how to attach cables to the measuring devices and how to
configure these devices for DS3 Terminated calibration (refer to Figure 3-1).
To attach cables between the ASA 312 and the oscilloscope:
1. Make sure that the ASA 312 and oscilloscope are turned on.
2. Attach the BNC T-connector to the oscilloscope’s BNC input connector.
3. Attach one end of a 75 ohm BNC coaxial cable to the BNC T-connector and
the other end of the BNC cable to the ASA 312’s
DS3 TX
BNC connector.
(Refer to Figure 3-1.)
4. Attach one end of a 75 ohm BNC coaxial cable to the BNC T-connector and
the other end of the BNC cable to the ASA 312’s
DS3 RX
BNC connector.
