Comtech EF Data CRS-120 - Manual (Page 11)

1:1 Redundancy Switch Revision 3
Preface MN/CRS120.IOM
ix
Electrical Safety
The 1:1 redundancy switch has been shown to comply with the following safety standard:
EN 60950:
Safety of Information Technology Equipment, including electrical
business machines
The equipment is rated for operation at +12 volts DC. It has a maximum
power consumption of 1.2 watts, and draws a maximum of 100 mA at
+12 volts DC. A single modulator is capable of supplying the entire
current.
The User should observe the following instructions:
Equipment Connection
The 1:1 redundancy switch is designed for operation ONLY with Comtech CDM-500,
CDM-550 or CDM-550T Modems. These Modems supply DC operating current
(electronically fused and protected) and control signals for the correct functioning of this
unit. Connection to other manufacturer’s equipment could result in damage to the unit.
Environmental
The 1:1 redundancy switch must not be operated in an environment where the unit is
exposed to extremes of temperature outside the ambient range 0 to 50
°C (32 to 122°F),
precipitation, condensation, or humid atmospheres above 95% RH, altitudes
(un-pressurised) greater than 2000 metres, excessive dust or vibration, flammable gases,
corrosive or explosive atmospheres.
Operation in vehicles or other transportable installations which are equipped to provide a
stable environment is permitted. If such vehicles do not provide a stable environment,
safety of the equipment to EN60950 may not be guaranteed
Telecommunications Terminal Equipment Directive
In accordance with the Telecommunications Terminal Equipment Directive 91/263/EEC,
this equipment should not be directly connected to the Public Telecommunications
Network.