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NH-50AC Front
CONTROLS AND SETTINGS:
DIP SWITCH SETTINGS:
1-2-4-8 Switches: (labelled 1, 2, 3, 4 on actual switch)
1. Set dip switches to the numerical value of the station button
you are designating as the ALL CALL button. (Recommended to use 10)
2. Station numbers are 1-10 vertically on the master station.
If the All Call button is the TOP button on a column, set dip switch 1 to ON.
If the All Call button is the BOTTOM button, set switches 2 & 8 to ON.
TRUNK VOL.:
These switches adjust the output volume level of the All Call to each group of stations (trunk lines).
Adjust the switch to LOW, MID, or HI for the desired volume.
ALL CALL VOL.:
This controls the overall output volume of the All Call. Adjust to the desired level.
VOL.
ALL CALL
VOLUME
WIRING:
1. Follow the wiring diagram on page 1 of these instructions.
2. Connection from NHX-80X to A1, A2, P3, P4, D5, D6 terminals of the NH-50AC correspond to
which trunk line the All Call button is on. If the All Call button is on column 5 of the master,
connect as shown on the diagram. If the All Call button is on any other column on the master,
connect A1~D6 from appropriate corresponding trunk line terminals of NHX-80X.
3. The P3, P4, D5, D6 terminals act as a junction point for the common wires of the trunk line
that the All Call adaptor is on. The NH-50AC has to be wired directly from the NHX-80X, then
the patient station trunk wires go out from there.
4. Wiring from the NH-50AC to patient stations require an extra wire. Use the GRAY wire from
the Aiphone #862208 trunk cable to connect the BLACK wire of the patient stations to the BL
terminal of the NH-50AC. (Two BL terminals are paralleled internally, so either of them can be
used.)
5. The X1 terminal is only used in systems beyond 49 stations when a second NH-50AC is
required. The AUX input is only used on the second All Call adaptor. Wire the A1, A2
terminals of the first adaptor to the AUX input of the second.
OPERATION:
1. Press button on the master station that has been designated as the ALL CALL button.
2. Pick up handset and make announcement, or press and hold TALK button while speaking.
3. Hang up handset, or press OFF button when ALL CALL announcement is completed.
SPECIFICATIONS:
Power Source: 12V DC. Use PS-1225UL, one per system (powers one or two NH-50AC)
Communication: Handset or push-to-talk. All Call is transmit only.
Wiring: 16 conductors from NHX-80X to NH-50AC
1 pair from trunkage line plus one additional wire output to patient stations
5 conductors from first to second NH-50AC
Aiphone Communication Systems
1700 130th Ave. N.E.
Bellevue, WA 98005
(425) 455-0510
FAX: (425) 455-0071
Toll Free Technical Support:
1-800-692-0200
E-mail tech@aiphone.com
NH-50AC Instr
0708JDJS
ON
OFF
1 2 4 8
1 2 3 4
Back
ALL CALL
TRUNK
VOLUME
1 2 3 4 5
HI
MID
LOW