Lamp Test
60
Document #50066 Rev.D2 12/03/02 P/N 50066:D2
5.3.4 NAC 1 & 2
Pressing
B1
followed by the
[ENTER/STORE]
key displays the voltage on NAC #1.
Pressing
B2
followed by the
[ENTER/STORE]
key displays the voltage on NAC #2.
NAC voltage readings are nominally -2.32 volts when an EOL resistor of correct value is in place. A reading of 0.00
volts appears for shorts, -4.50 volts for opens. Intermediate readings are also possible.
5.3.5 Resettable Power
Pressing the
Reset
key followed by the
[ENTER/STORE]
key displays the resettable 24 volt power. The resettable
power must read 24 volts (+/- 10%).
5.3.6 Telephone Lines
Pressing
C
for touchtone dialing or
D
for rotary dialing, followed by the
[ENTER/STORE]
key causes seizure of the
Primary phone line which in turn lights the red LED signifying Primary phone line active. After a delay of three
seconds, the control panel goes off-hook to acquire a dial tone.
The control panel keypad may be used as a telephone touchpad for number dialing. Once the first digit is pressed, the
display will move the
C
or
D
character one position to the left, while placing the digit to be dialed on the farthest right
display position. Continue to press the phone numbers to be dialed. Successive depressions of the
[ENTER/
STORE]
key hangs-up and picks-up the phone (places the phone on or off the hook).
The secondary phone line may be tested by pressing the
E
key for touchtone dialing or the
F
key for rotary dialing
and then following the same procedure used for the primary phone line.
A handset may be temporarily connected across transformer T1 as indicated in Figure 5-1. The handset, when
connected across T1, may be used only as an amplifier/speaker and telephone with the control panel used for number
dialing.
5.4
Lamp Test
To perform a Lamp Test, press the
MODE
key, then the code
5267
followed by the
[ENTER/STORE]
key. This will
test all system LEDs except the Primary Active LED, Secondary Active LED and Modem LED. The LEDs will stay
on for five seconds, then the control panel will return to Normal Mode.
☛
5267
spells LAMP on a Touch-Tone
®
phone
FIGURE 5-1:
Handset/Speaker Connection
Both Primary and Secondary Lines
Содержание MS-5024
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