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1
2
3
4
5
6
7
8
9
0
#
Red: Talk Mode.
Green: Monitor mode.
Red lead polarity:
Green = B(-Ve).
= A (+Ve).
Red
PULSE
FLASH
VOL
MEM
LNR/PAUSE
STO
POL
SPKR
TONE
TALK
MONITOR
MUTE
DIALLING
PULSE Dialing
Mixed Pulse and Tone dialling
Storing a number in memory
STO
MEM
Dialling a number from a memory
location.
LNR/PAUSE: Last Number
Redial and Pause
DTMF/TONE is the default dialling mode.
With the DigAlert™ connected to a live line,
press
before selecting
mode. This is confirmed by a single high
beep. Dialling mode will automatically revert
to Tone when the line is disconnected or if the
is switched off.
Select Pulse mode as above and dial the
Pulse digits. Press
(Tone) then dial the
Tone digits (the star will not be dialled out).
This can be stored in memory.
There are ten memory locations, one under
each of the dialling digits.
While connected to a line and in
mode:
Press
on the keypad. Enter the
telephone number.
Press
. Press the storage button
location 0-9.
The number is stored under the button
chosen. ln memory you may also store ,#,
or
. These will be
redialled as they were entered.
While connected to a line and in TALK
mode:
Press
the location digit 0-9.
The stored number under that button will be
redialled.
Press
immediately after
off-hook to redial the previous number dialled.
During dialling, if you press
the Pause function operates. This inserts a 4
second pause in the dialling out string.
Dialling resumes at the end of the pause.
p
S
r
l
p
t
*
t
S
r
*
f
l
t
r
l
l
PULSE
Talk
TALK
STO
MEM
Flash
Pause
MEM then
LNR/PAUSE
LNR/PAUSE
DigAlert 350
f
FLASH
POL: POLARITY TEST
SPKR: SPEAKER MODE
Ground-start lines
ELR: Earth Loop Recall
FLASH
POL
RED
GREEN
SPKR
SPKR
VOL
On units fitted with optional third wire
(item M0023/15):
On units fitted with optional third wire
(item M0023/15):
A timed line break is generated when the
button is pressed.
Press
and observe the polarity
LED.
LED: red lead is connected toA(+Ve).
LED: red lead is connected to B(-
Ve).
During this test,
remains high
impedance and will not interfere with data or
speech calls.
Press
to activate the speaker
function. If
is pressed while
is off, then Loud-speaker
Monitor is automatically activated.
Press and release
to select the
high setting, press again to return to the
normal setting.
In TALK mode, receive only is possible while
in speaker mode.
After disconnection from the line for more
than 1.5 minutes,
automatically
switches off and the time-out tone is heard.
connect green wire to
ground, press
TALK momentarily and
check for dial tone. Ground start is then
automatic and the green wire can be left
connected to ground, without affecting the
call.
while in TALK mode on a
looped line and with the green wire to ground,
press
PULSE momentarily and check
for second dial tone.
f
P
s
s
v
t
p
P
s
DigAlert 350
DigAlert 350
DigAlert 350
Volume adjustment:
t
m
M
TALK MODE
MONITOR MODE
MUTE
Press
to go off-hook.
A double beep is heard and the mode LED
flashes
.
Press
to go back on-hook. The
mode LED then flashes
.
: if
is connected
to an overvoltage or a digital signal, then
does not loop the line and
sounds an alarm.
Connect
to the line.
Press and release
to go off-hook.
Thanks to
, there are four different
cases:
1\ A digital signal is present:
is heard,
locks out and does not
loop the line. To override this alarm, hold
down the
key.
2\ A high DC level is present (>116V±4V):
is heard,
locks out and does not loop the line. This
alarm may not be overridden.
3\ A dc level between 76V(±4V) and
116V(±4V) is present:
is
heard, the mode LED flashes
,
locks out and does not
loop the line. To override this alarm, press
again.
4\ No alarm (i.e. no digital signal nor high DC
present):
goes off-hook and
loops the line.
Press
. The mode LED flashes
. Press again
to switch
off
.
In order to extend its battery life, Monitor is
automatically switched off after 20 minutes, if
connected to a powered line, and 1.5 minute
after disconnection.An audible signal is heard
on timing out.
Press and release
to cut off
transmission. Press again to talk.
t
m
t
t
t
m
m
M
TALK
RED
MONITOR
GREEN
TALK
a two tone alarm
TALK
a
single tone alarm
a single tone alarm
RED and
GREEN
TALK
Digital signal detection OVERRIDE
MONITOR
GREEN
MONITOR
MUTE
PLEASE NOTE
DigAlert 350
DigAlert 350
DigAlert 350
DigAlert 350
DigAlert 350
DigAlert 350
DigAlert 350
DigAlert 350
AUTOMATIC PROTECTION OF
DIGITAL LINES:
When connected to normal DC, it is possible to
override the digital detection lock-out by pressing
and holding
for more than 6 seconds and
until the override tones have stopped. This can be
particularly useful on a faulty line being highly
imbalanced.
t
TALK
(high Z).
DigAlert
TM
Replace
Battery
