MONITOR / TALK Switch
Polarity LED
MUTE Button
Volume Control Switch
Operation
Talk Mode
Slide switch to
TALK
to go off-hook (connect).
This device is for connection to TNV3 network voltages
only. Use this unit only on standard analog Telecom
networks. If this unit is
accidentally
connected to an
over-voltage condition, it will attempt to protect itself:
• Raw battery and V up to 90 VDC: Clicks and/or beeps
heard repeatedly in the earpiece while fault exists.
• 90 V to 180 V: Continuous ringing heard.
Disconnect the unit as soon as possible as damage
may occur.
Connection to voltages in excess of 200 VDC can cause
permanent damage to the unit.
Slide switch to
MONITOR
to go back on-hook (disconnect).
The TM-500 test set is DSL compatible and can be used
on a DSL enabled line without the need of an external DSL
filter.
Monitor Mode (high impedance)
Slide switch to
MONITOR
.
In this mode, the unit can monitor audio signals on the line.
No power from the line is needed.
Mute
Press and hold the
MUTE
button to cut off transmission
during a call.
Volume Control (Talk mode only)
Slide switch to
1
,
2
, or
3
to satisfy earpiece volume level
requirements in Talk mode.
Polarity Test
Press
Pol
and observe the polarity LED. In the presence of
power, the LED will light either red or green:
• Red LED: red lead is connected to Tip/A/+Ve.
• Green LED: red lead is connected to Ring/B/–Ve.
During ringing, both red and green LEDs will light in turn
and may appear amber.
Identification
Last Number Redial and Pause
Press
LNR/Pause
immediately after off-hook to redial the
previous number dialed. In Store mode, press
LNR/Pause
to insert a 4 second pause in a memory. Press
LNR/Pause
again to increase the pause duration.
Flash
Press
Flash
to generate a timed line break. The settings
are 100 ms (default), 300 ms, or 600 ms.
Storing a Number in Memory
There are 10 memory locations, one under each of the
dialing digits (0–9).
While connected to a line and in Talk mode:
1. Press
STO
to enter Store mode.
2. Enter the telephone number to be stored.
3. Press
STO
and a location (0–9) to store. The number is
stored under the button chosen.
In memory you may also store
*
,
#
,
Flash
, or
LNR/Pause
.
These will be redialed as they were entered.
Memory Recall—Dialing a Number
from a Memory Location
While connected to a line and in Talk mode:
1. Press
RCL
.
2. Press the location digit (0–9). The stored number under
that button will be redialed.
Multiple memories can be recalled, one after the other.
Pulse Dialing
In Talk mode, press
Pulse
before dialing. Pulse mode is
confirmed by a single high beep in the earpiece. Dialing
mode will automatically revert to Tone when the line is
disconnected or the unit is switched to Monitor mode.
Mixed Pulse and Tone Dialing
Select Pulse mode as above and dial the pulse digits.
Press
*
(Tone)
and then dial the tone digits (the star will
not be dialed out). This will be stored in the Last Number
Redial memory as dialed. Redialing will be mixed mode if
in Pulse mode when redial is attempted. If Tone mode is
selected, all digits will be dialed in Tone including the star.
Setup Mode
In Talk mode, press
STO
and
*
together. Use the following
table and the numerical keys to set up the unit to meet
your local requirements.
ETSI
USA
1
Pulse Rate
1
10 pps
@
$
2
20 pps
2
Flash Duration
1
100 ms
@
2
300 ms
3
600 ms
$
3
DTMF Level
1
High
$
2
Low
@
4
Make/Break Ratio
1
60/40
@
$
2
67/33
5
Send Level
1
High
$
2
Low
@
7
Sidetone
1
High
$
2
Low
@
0
Defaults
2
ETSI
@
3
USA
$
Press
*
to save changes and exit, or slide switch to
MONITOR
to ignore changes.
Ground-Start Lines
Using an adapter to connect a green wire to Pin 5 of the
line cord jack:
1. Connect green wire to ground.
2. In Talk mode, press
G/S
momentarily.
3. Check for a dial tone.
Earth Loop Recall
Using an adapter to connect a green wire to Pin 5 of the
line cord jack:
1. In Talk mode on a looped line and with the green wire
to ground, press
ERL
momentarily.
2. Check for a second dial tone.
Hands-Free Mode
The TM-500 can be used hands-free with the headset
plugged into its socket at the base of the unit. Only use the
supplied headset.
Headset
Jack
3–Red
5–Green
Earth Connection
4–Black
