Conrad Compact DSP Test- Set Benutzerhandbuch Seite 3

A. TALK (off-hook) Use this mode for making / answering calls. The battery is not required. 'Over current
protection' protects the tester from a zero impedance feed. Select tone/pulse before or after switching to
'TALK'.
Beware! - Will disrupt traffic if connected to digital line while in TALK mode.
B. OFF (on-hook) The tester should be left in this mode when not in use (stand-by), as it alerts the user to
ringing voltages on the line, but uses no battery current.
To reduce disruption to digital traffic accidentally encountered, the ringer impedance is higher than normal
on-hook impedance ( But MON mode is best for checking unidentified lines).
Beware! Connecting the Compact Tester in the TALK Mode to a line will disrupt any Digital traffic.
C. MON (Monitor) This is the tester's highest AC impedance mode, and should be used for checking the
line before switching to 'TALK'.
A good battery is required for this mode.
The tester will auto power-off within 5 mins, when not connected to a powered line. It will also auto
power-on when connected to a powered line if left in 'MON' position .
In monitor mode no line current is taken, no sound is passed from microphone to line.
EXPLAINED: Unusual sounds in the earpiece/headset
Hiss:fax, modem or digital traffic.
loud, continuous 50 Hz hum: may be AC.
loud, cadenced 20 Hz hum: may be ringing. Check by switching to 'OFF'.
9. Ringer
In 'OFF' mode, the ringer will warble in response to the ringing current, even if the battery is not installed.
Front Features
1. (TBR / FLASH) Timed Break Recall
Interrupts line current for the duration set by the switch under
the battery (select from 100, 300, 600 ms). Factory setting -
100ms.
2. LNR (Last Number Redial)
Redials up to 32 previous digits and any pauses.
3. POL (Hi-Z Active Polarity)
It is important to have good a battery installed to use this mode.
No clicks are induced on the line when the POL button is
pressed.
Polarity works in all modes, even in parallel with an off-hook
phone.
4. PAUSE
Two second pauses are added with every press of this button,
useful for easy access to chargecards etc., use in conjunction
with LNR feature.
5. GS (Ground Start / Earth Calling)
An optional 3-wire test lead (Part No.M0459-03) is required to
use this feature.
Ensure the croc clip is connected to ground, then press just
after moving to talk mode. Release when dial tone heard.
6. TONE/PULSE selection
Dialling method. Select before switching to 'TALK'. Pressing '
in pulse mode, switches the tester to DTMF for the remainder
of the call.
Use as on a conventional phone.
7. BATT (Battery Low Warning)
In 'MON' mode, when the LED first illuminates it indicates that
approximately 2 hours of continuous operation remains.
Note: This feature does not work in 'TALK' and 'OFF'.
8. Main Mode Switch
1
*
'