Ndsu; Ndcu; Nmdu; Npsa-M/Lpsa-M - Toshiba Perfecptione Installation And Maintenance Manual

INSTALLATION INSTRUCTIONS
SECTlON200-255-202
FEBRUARY1992
l
MFALM LED-indicates NDTU has not
achieved Frame Synchronization.
l
YALM LED-Indicates a Yellow Alarm is
detected by the NDTU.
l
BALM LED-Indicates a Blue Alarm is de-
tected by the NDTU.
l
Signaling Type Selection Switches S4 w
Sl l-Six-element DIP switches used to se-
lect one of four available signaling modes, on
a per channel basis, for each of the 24 NDTU
channels. Available signaling modes are:
CO (Loop Start) mode
CO (Ground Start) mode
DID (2-wire signaling)
TIE Line mode (4-wire E&M)
NEKWNSTWNOCWNDKU
l
FALT LEDs 1 & 2-Indicate software-de-
tected faults or a disabled state caused by an
input command from the maintenance termi-
nal (TPER Program) or while ports are pro-
grammed. Each LED indicates four of the
eight circuits on the NEKU, NSTU, NOCU, or
NDKU:
FALT #l = Circuits 1 w 4
FALT #2 = Circuits 5 w 8
NDSU
l
FALT LEDs 1 & 2-Indicate software-de-
tected faults or a disabled state caused by an
input command from the maintenance termi-
nal (TPER Program) or while ports are pro-
grammed. Each LED represents two of the
four ports on the NDSU:
FALT #1 = Circuits 1 & 2
FALT #2 = Circuits 3 & 4
NDCU
l
FALT LEDs 1 & 2-Indicate software-de-
tected faults or a disabled state caused by an
input command from the maintenance termi-
nal (TPER Program) and while ports are
programmed. Each LED indicates four of the
eight circuits on the NDCU:
FALT #l = Circuits 1 w 4
FALT #2 = Circuits 5 m 8
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NOT READY LEDs DIU l* 4and DIU 5 u 8-
Indicate the DDIU' s (-MA or -MAT) power
switch is not in the ON position or tip and ring
line polarity is reversed.
NMDU
l
FALT LEDs 1 & 2-Indicate software-de-
tected faults or a disabled state caused by an
input command from the maintenance termi-
nal (TPER Program) and while ports are
programmed:
FALT #l = DIU Circuits 1 w 4
FALT #2 = Modem Circuits 1 w 4
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NOT READY LEDs DIU 1 w 4-Indicate the
DDIU' s (-MA or -MAT) power switch is not in
the ON position or tip and ring line polarity is
reversed.
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BSY LEDs (Modem) 1 Y 4-Indicate the
busy/idle status of each of the four modem
circuits (the LED is ON when the circuit is
busy).
NPSA-M/LPSA-M
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LEDs indicate the presence of: Ringer and
-48, -24, -12, +12, -5, +5 voltages.
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AC Power LED-Indicates the presence of
AC power to the NPSA-M.
NPSA-S
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LEDs indicate the presence of: -48 and -24
voltages.
8. PERIPHERAL EQUIPMENT
8.00 Electronic and Digital Telephone
8.01 Four different electronic telephones and two
different digital telephones may be used in the
system.
8.02 All electronic telephones share the same
dimensions:
Height: 3.7 in. (94mm)
Width: 7.1 in. (180mm)
Depth: 9.5 in. (241 mm)
8.03 All digital telephones share the same dimen-
sions:
Height: 3.6 in. (92mm)
Width: 7.3 in. (184mm)
Depth: 9.0 in. (229mm)
8.04 Both electronic and digital telephones feature
modular handset cords. Electronic telephones are
connected to the system via 4-conductor modular
2-8