Greenlee Compact DSP, Инструкция по эксплуатации, Страница: 6 / 24

6
Using the Compact Test Set
Installing the Battery
Refer to figures on page 2.
Electric shock hazard: Disconnect cordset from line
before opening battery cover.
Failure to observe this warning could result in severe
injury or death.
1. Slide the main mode switch to OFF .
2. Loosen the battery cover captive screw (Fig. 1) and
carefully open the cover using a screwdriver (Fig. 2).
3. Connect a good 9 V alkaline battery to the clip
(Fig. 3). In OFF mode negligible battery power is
drawn.
4. Replace the cover, ensuring that both tabs are
located correctly (Fig. 4). Tighten the battery cover
captive screw.
Connecting the Cordset
If not already fitted, plug in the RJ11 connector and
secure the strain relief mechanism.
Hi-Z Active Monitor Mode (MON)
High impedance monitor mode allows the user to assess
the state and traffic on the line by listening without
disrupting that traffic. Negligible loop current is drawn
and AC impedance is high.
1. Slide the main mode switch to
MON
. (If the unit is not
connected to a powered line within 5 minutes, it will
automatically switch off.)
2. Attach the RED lead to “B” leg and the BLACK lead to
“A” leg, using the alligator clips.
3. Listen. Traffic will be heard if it is present on the line.
If a loud 50 Hz/60 Hz hum is heard,
BEWARE – it
may be mains power . If a hiss is heard, there could
be digital traffic.
4. Press and hold the POL button; observe the LEDs at
the top of the keypad. An illuminated LED indicates
that the voltage on the line is greater than 5 V; RED
indicates that “A” leg and “B” leg may be reversed. If
both LEDs illuminate,
BEWARE – AC is present
.
Red LED:
Tip/Ring: reversed
“A” / “B” reversed
Black/Tip: –ve
Red/Ring: +ve
Green LED:
Tip/Ring: normal
“A” / “B” normal
Black/Tip: +ve
Red/Ring: –ve
TALK Mode
1. With the main mode switch in MON , check if the line
is in use. If not, select the required dialing mode with
the TONE/PULSE switch, and then slide the main
mode switch to
TALK
.
2. Listen. When dial tone is heard, dial a number as you
would on a conventional telephone.
Note: To temporarily switch from pulse to tone sig-
naling, press
*
key. This can be useful when using a
PABX, charge-cards, voice mail, etc.
3. The earpiece volume can be boosted above a normal
phone’s level with the volume slider.
4. It is possible to cut off transmission by muting the
microphone. To do this, press and hold the
MUTE
button.
5. To hang up, slide the main mode switch to OFF .
OFF Mode (OFF)
1. The ringer will warble in OFF mode when there is an
incoming call.
2. To answer the call, slide the main mode switch to
TALK
.
3. To hang up, slide the main mode switch to OFF .
4. When not in use, ensure that the main mode switch
is in the
OFF
position.
Note: The main mode switch should be left in the OFF
position when the tester is not in use. In this position
battery consumption is negligible. If the tester is not
used for an extended period, it is advisable to remove
the battery just in case it leaks and causes damage to
the tester.