5
X
RS-232,485 + 2
X
E
THERNET
/2 M
BIT
/
S
G.703 (G.704) M
ULTIPLEXER
O
PERATING
M
ANUAL
IOA81-1E
IV
August 2004
Operational safety
The TM-81.1 multiplexer has been designed and tested for the operating safety in
accordance with PN-EN 60950 standard.
!
This Operating Manual is an integral part of the device and it is delivered to the Us-
ers along with it.
!
Only authorised persons with qualifications confirmed by the appropriate certificate
can configure the device.
!
The power supply cable should always be connected to power source by means of a
socket with neutral pin. Connection to the power network without neutral pin is al-
lowed, provided the earthing terminal located on the rear panel of the device is con-
nected to ground.
!
Simultaneous grounding and neutral earthing through power cord is not allowed.
!
Dual fuse - phase/neutral. Each phase wire is protected with separate fuse installed
inside the device. If only one fuse is defective, other components can be live.
!
Some of power pack components installed on PCB are connected with mains potential.
!
In order to avoid any contact with live components, always disconnect power supply
before removing the cover.
!
The device is not equipped with a built-in circuit-breaking system. Such a system
should be installed outside the device.
The Manufacturer is not responsible for any use of the device in a manner non-
compliant with the operating manual.