Aiphone PC-359B-PC-454 INSTALLATION INSTRUCTIONS

PC-359B

Call Holding Circuit Board for Non-Aiphone Speaker and Call Button with

NEM, NDR, NDRM Systems

- INSTRUCTIONS -

The PC-359B call holding circuit board provides the latching function when a call is placed from a remote station on the
NEM series Lamp Memory System. With this circuit board, a speaker and a "Normally Open" call button can be used as
a remote station where a standard sub station cannot be used. The NEM system impedance is 20 ohms, so either use
a 20 ohm speaker, or an 8 ohm speaker with the LT-1 matching trasformer.

WIRING DIAGRAM:

PC-359/B

(solder side view)

To "E" terminal
of master

To "#" terminal
of NEM master

9

8

7

7

7

6

Add jumper
between "6" and "7"

5

To Speaker "-"

** 20 Ω

speaker

To
Speaker
"+"

Normally Open

*

1

4

3

2

2

* Note that speaker connection is on inner land
pattern solder pad, not the one closest to the edge.
** When using an 8 Ω speaker, add the LT-1
transformer shown below.

LT-1

20 Ω (red)

8 Ω (blue)To PC-359/B. To 8 Ω speaker.

call button

SPECIFICATIONS:

Power Source: Supplied by Master Station (NEM, NDR, NDRM)
Speaker: Use 20 ohm speaker, or 8 ohm speaker with LT-1 transformer
Call Button: Normally open momentary contact
Mounting: Conceal behind speaker or call button
Terminations: Solder connections directly to PC board made by installer
Wiring: 2 conductor shielded (1 common and 1 individual wire per remote)
Wiring Distance: 420' w/ 22AWG, 1,000' w/ 18AWG
Dimensions (HxWxD): 3-3/16" x 1-1/4" x 5/8"

Aiphone Communication Systems
1700 130th Ave. N.E.
Bellevue, WA 98005
[phone]
FAX [phone]

TOLL FREE TECHNICAL SUPPORT: [phone]

TOLL FREE FAX LINE: [phone]

E-MAIL: [e-mail]

PC-359B Instr.

0404PHJS