8
ISP Block Diagram
ISP-‐4D models:
Protection
Protection
Protection
Protection
Optical
Isolation
Optical
Isolation
Optical
Isolation
Optical
Isolation
Control Logic
Out Port 4
Out Port 3
Out Port 2
Out Port 1
In Port
Transmitter
Transmitter
Transmitter
Transmitter
Protection
In Port
Line
Termination
Receiver
Optical
Isolation
PSU
ISP-‐4R models:
Protection
Protection
Protection
Protection
Optical
Isolation
Optical
Isolation
Optical
Isolation
Optical
Isolation
Control Logic
Out Port 4
Out Port 3
Out Port 2
Out Port 1
In Port
Transmitter
Transmitter
Transmitter
Transmitter
Protection
In Port
Line
Termination
Receiver
Optical
Isolation
PSU
PSU Connection
A suitable power supply unit that meets the following conditions, must be supplied by the user:
•
Stabilized DC output voltage: 10V – 48V, max. 400 mA
•
Power: 4 W
See page 7, item 1, “power input”.
It is not strictly required but highly recommended to properly connect the ground pin to earth. Not connecting the
ground pin may affect the performance of the device.
The device can only be operated as a “ground referenced” transmitter if it is properly grounded. See page 9.
Warning! For protection from dangerous electric shocks, the device must be grounded (earthed). The local AC
power source must have both overload and ground-‐fault (earth fault) protection.
DMX Connections
The DMX input is fully isolated and has a built in termination.
Depending on the product variant, the DMX inputs and the
DMX outputs are provided as pluggable screw terminals or as
RJ-‐45 connectors.
Models with Terminal Connectors
This configuration applies to ISP-‐4D-‐TERM and ISP-‐4R-‐TERM.
Pin
Connection
1
Data +
2
Data -‐
3
Com
4 (outputs only)
Earth
