| 3.01 |
Before
using the 240 Tone Test Set, check to make
sure the battery is in good condition. |
| |
This
can be accomplished by putting the switch
in the "Continuity" (towards the
LED) |
| |
position
and touching the two 6A clips together.
The LED should glow GREEN. |
| 3.02 |
OFF
Position of the function switch (centered).
In the OFF position of the function
|
| |
switch,
the 240 Tone Test Set checks the polarity
of the telephone line. When the RED
|
| |
test
lead is connected to the RING side of the
circuit and the BLACK lead is connected
|
| |
to
the TIP side of the circuit, The LED on
the front of the test set will glow GREEN
|
| |
showing
NORMAL polarity. If the leads are reversed,
the LED will glow RED
indicating |
| |
reverse
polarity. |
| 3.03 |
Similarly,
when the modular plug is connected to a
telephone modular jack, GREEN
|
| |
indicates
NORMAL polarity and RED
indicates REVERSE polarity. |
| 3.04 |
The
LED will light YELLOW if the modular
jack has normal polarity and the yellow
lead |
| |
is
grounded. |
| 3.05 |
The
LED will light RED
if the modular jack has reverse polarity
even if the yellow lead |
| |
is
grounded. |
| 3.06 |
The
240 Tone Test Set in the OFF position may
also be used to detect ringing voltage |
| |
on
the line. When ringing voltage is present,
the LED will flash YELLOW at the
ringing |
| |
rate
per second. |
| 3.07 |
Plugging
the telephone cord into the modular jack
on the 240 Tone Test Set |
| |
REVERSES
THE CONNECTION to the instrument. Connected
in this way, RED
|
| |
indicates
NORMAL and GREEN
indicates REVERSE polarity. |