Operation; Talk/Monitor Switch; Operating The Test Set In Monitor Mode - Fluke TS52PRO User Manual

TS52PRO Test Set
Users Guide

Operation

The test set has two basic modes of operation: Talk
mode and Monitor mode. Talk mode is used for off-
hook operations (such as dialing verification, automatic
number identification, and audio quality verification).
Monitor mode is for audio monitoring of the Tip and
Ring pair while on-hook. In Monitor mode, the test set
has a high input impedance, which allows monitoring
of the line without disrupting conversations or data, if
present.
W
When testing circuits that are close to a
battery source, clipping onto a line may
cause loud pops in the receiver. Holding the
receiver tightly against your ear may cause
acoustic shock. The test set is designed to
rest comfortably on the shoulder with some
space between the receiver and the ear. It
should be used in this position when
working close to a battery source.
Shorting the Tip and Ring leads together
while connected to a data line will disrupt
data on the line.

Talk/Monitor Switch

See Figure 1.
The Talk/Monitor switch is a rocker switch located on
the side of the test set. The T position puts the test set
into Talk mode. The M position puts the test set into
Monitor mode. Talk mode activates the keypad display.
12
Warning

Operating the Test Set in Monitor Mode

In Monitor mode, the test set is always on-hook. The
test set draws no direct current from the line and it
transmits no signals to the line. In this mode, the test
set has a high ac input impedance, which allows
listening for audio signals without disrupting
conversations or data signaling that may be present.
Either the handset receiver or the speaker can be used
to monitor a line.
Monitor Mode Only - You can monitor a line for
2 minutes. Although the LCD will turn off after
30 seconds, the test set is still on. You can
monitor the line for an additional 90 seconds
after the LCD turns off. Press the VOL or Vdc/ma
TEST key to turn the LCD on again. See
"Speaker/LCD/Test Set Timeout" on page 18 for
information on changing the timeout duration.
You can press the SPKR key to activate the Amplified
Monitor Mode. This will disable the handset receiver
and all audio signals are routed to the speaker. Two
volume levels are available, normal and high. Press the
VOL key to toggle the volume level. The volume icon
on the display indicates the volume level. Press the
SPKR key again to return to Handset Monitor Mode.
The speaker will shut off and signals can be monitored
through the handset receiver.
To preserve the battery life, the Amplified Monitor
Mode will time out and return to normal mode. The
timeout duration is user programmable. See "Speaker/
LCD/Test Set Timeout" on page 18 for information on
changing the timeout duration.
In the Monitor mode, the test set is typically used for
one or more of the following procedures:
•
Verification that a line is idle when looking for a
line to borrow
•
Listening for noise on the line
•
Hunting for tracer tones
•
Testing for dc voltage on the line by using the Vdc/
mA TEST key
Note