AMERITEC AM-48 - Connection and Configuration of AM-48

AM-48 Test Set (18-0015) Connection & Configuration
0015-S06
6
-1
6. CONNECTION AND CONFIGURATION
6.1 Introduction
This section describes the AM-48 connections and configurations
made in preparation for testing. It is divided into the following
paragraphs:
6.2 General
6.3 Connectors and Cables
6.4 600 Ohm/900 Ohm Line Termination Impedances
6.5 Impedance Adapter
6.6 Configurations
In ¶6.6, basic operating instructions are given for testing with the
Western Electric 829 loopback device, as well as with Ameritec
responders.
Note: Section 7 gives detailed AM-48 operating instructions and
Section 8 explains the meaning of the measurements.
6.2 General
Low-Level Noise Measurements . Power the AM-48 with batteries
when making a low-level noise measurement. Do
not power the
AM-48 with the AC Adapter for this test because interference from
the AC source can affect the measurement.
“Dry” Circuit Measurements . Set Switch 12 (Figure 3-5) to <ON HK>
when making measurements on “dry” (4-wire only) circuits. “Dry”
circuits have no loop current.