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Conrad Compact DSP Test- Set Benutzerhandbuch Seite 5

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Using your Compact Test Set
Installing the battery
1. For safety reasons, the unit must always be
disconnected from the line before the battery cover
is removed.
2. Slide the main mode switch to 'OFF'.
3. Loosen the battery cover captive screw
(Fig 1) and carefully prise open the cover using a
screwdriver (Fig 2).
4. Connect a good 9V alkaline battery to the clip
(Fig 3).
In 'OFF' mode no battery power is drawn.
5. Replace the cover ensuring that both tabs are
located correctly (Fig 4). Finally, tighten the battery
cover captive screw.
The 'flat battery - always ready' feature means calls
can be made and answered even if no battery is
fitted.
Connecting the Leadset
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.
6. Slide the main mode switch to 'MON'. (If the unit
is not connected to a powered line within 5 mins, it
will automatically switch off.)
7. Attach the RED lead to "B" leg and the BLACK
lead to "A" leg, using the alligator clips.
8. Listen. Traffic will be heard if it is present on the
line. If a loud 50Hz/60Hz hum is heard, beware! -
it may be Mains power. If hiss is heard, there could
be digital traffic.
9. 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
5V; RED indicates "A" leg and "B" leg may be re-
versed. If both LEDs illuminate, beware! - AC is
present.
Red LED:
Tip/Ring: reversed
"A" / "B" reversed
Black/tip: -ve
Red/ring: +ve
Talk mode
10. With the main mode switch in 'MON', check if the
line is in use. If not, select the required dialling mode
with the 'TONE/PULSE' switch, and then slide the
main mode switch to 'TALK'.
11. Listen. When dial tone is heard, dial a number as
you would on a conventional telephone.
TIP: To temporarily switch from pulse to tone
*
signalling press
using a PABX, charge-cards, voice mail, etc.
12. The earpiece volume can be boosted above a
normal phone's level with the volume slider.
13. It is possible to cut off transmission by muting
the microphone. To do this, press and hold the
'MUTE' button.
14. To hang up, slide the main mode switch to 'OFF'.
Off mode (OFF)
15. The ringer will warble in 'OFF' mode when there
is an incoming call.
16. To answer the call, slide the main mode switch
to 'TALK'.
17. To hang up, slide the main mode switch to 'OFF'.
18. When not in use, ensure that the main mode
switch is in the 'OFF' position.
TIP 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.
Now turn to the rear pages of this User Guide for
product specifications and features.
3
Green LED:
Tip/Ring: normal
"A" / "B" normal
Black/tip: +ve
Red/ring: -ve
key. This can be useful when

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