C2G 26844 Tone Generator & Probe User Manual
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 * One push-button TRACE switch
 * One battery low LED indicator
 * One amplifier and one LED for signal detection 
 * One rotary volume level switch
Operation
A. Identifying the polarity of a telephone line
1. Load the 9V battery
2. Slide the toggle switch to the 
 "Off" position
3. Connect the black test lead to ground 
4. Connect red test lead to the line you 
 wish to test
5. LED indicator results:
 a. GREEN light: indicates normal polarity
 b. RED light: indicates reversed polarity
 c. YELLOW light: indicates presence of AC 
power on the telephone line
Note: If a ground is not available, you may try to switch the
test leads around to different wires within the pair. 
The LED indicator will light GREEN when the red test 
lead is connected to the ringside of the line and the 
black lead is connected to the ground.
DUAL TONE
SINGLE TONE
TONE GENERATOR
Off Tone
Cont
BAD
GOOD
BAT.LOW
B. Indicating telephone Line Condition
1. Load the 9V battery.
2. Slide the toggle switch to the "Off" position.
3. Plug the standard 4-pin modular cable into 
modular wall jack.
4. LED indicator results:
 a. BRIGHT GREEN light: indicates a clear line.
 b. DIM GREEN light: indicates a busy line.
 c. BRIGHT FLASHING RED and GREEN light: 
indicates a ringing line.
Note:  A DIMLY FLASHING GREEN light will result under 
ringing line conditions if the line's polarity is reversed. If the 
test is begun prior to an incoming call, the call will be 
blocked.
C. Verifying telephone Lines
1. Slide the toggle switch to the "Cont" position.
2. Dial the number of the line you wish to verify.
3. While the line is ringing, connect the red lead to 
the ring side of the line, and connect the black 
lead to ground.
4. Slide the toggle switch to the "Off" position. The
LED indicator will flicker RED and GREEN 
when the test leads are connected to the subject 
pair.
5. To verify identification, monitor the line and
switch the test set to "Cont." This will terminate 
the call on the subject line.
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