Toa N-8000 Series - Manual (Page 369)

3-65
Chapter 3 INSTALLATION & WIRING
RS-480
Handset cables
Handset cables
Wall surface
RS-481
RS-480 (top)
Note
When using the RS-481 Option handset, cut the
jumper wire next to the handset joint connector on
the circuit board as illustrated at right.
If not cut, sound comes out from the RS-480's front
speaker and returns back to the handset’s
microphone, resulting in acoustic feedback.
Jumper wire
Handset joint
connector
13.6.2. RS-480 and external relay connections
External
power supply
Relay
Diode
24 V DC
GND
+ –
Blue (HOT)
White (COM)
Open collector output: 24 V DC, Max. 30 mA
RS-480
13.6.3. RS-480 and RS-481 connections
Connect the RS-480 handset cables to the RS-481's handset connection cables.
Note: Cut out the control cables if they are not used to avoid short-circuiting.