Progressive Electronics PE950 Manual De Instrucciones página 7

Operation
The test set must have a charged battery installed in order to operate.
1. Connect the red wire to the ring (negative) side of the circuit.
2. Connect the black wire to the tip (positive) side of the circuit.
3. Use the Talk, Monitor and Mute features as described in this section.
Automatic Ground Start
Some lines, especially PABX, require a momentary ground to draw a dial tone.
Connect the test set's red and black wires to the telephone circuit as usual, and connect the
green wire to ground. Press the TALK button momentarily to check for dial tone.
The ground start is automatic, and the green wire can remain connected without affecting the
call.
TALK
Press once to go off-hook (connect). Press MONITOR to go on-hook (disconnect).
Off-Hook Mode
LED: Flashing red
Tone: Middle Pitch–Middle Pitch
On-Hook Mode
LED: Flashing green (First press)
Tone: Middle Pitch
LED: None (Second press)
Tone: Low Pitch
Automatic Line Checks
After the TALK button is pressed, the PE950 and PE960 automatically check the line for the
presence of digital signals. If it detects digital signals, the speaker will produce a distinctive
alarm (Middle Pitch–Low Pitch, Middle Pitch–Low Pitch, Middle Pitch–Low Pitch) to indicate
that the test set is connected to a digital line. To prevent disturbance to the digital information
being transmitted, the test set will not go off-hook while connected to this type of line.
After determining that the line is free of digital information, the test sets check for excessive
voltages. If the test sets signals either the excessive DC voltage alarm (low pitch, low pitch,
low pitch) or the AC line voltage alarm (constant ringing), remove the test set from the line
carefully and immediately!
PE950 & PE960
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