ELTEX SMG-1016M, Руководство по эксплуатации

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SMG Digital Gateway
The digital gateway can be permanently used provided the following requirements are met:

Ambient temperature from 0 to +40°C

Relative humidity up to 80% at +25°C

Atmosphere pressure from 6,0х10*4 to 10,7х10*4 Pa (from 450 to 800 mm Hg)
The device should be not be exposed to mechanical shock, vibration, smoke, dust, water, and chemicals.
To avoid components overheating which may result in device malfunction, do not block air vents or place
objects on the equipment.
1.11.2 Electrical Safety Requirements
Prior to connecting the device to a power source, ensure that the equipment case is grounded with an
earth bonding point. The grounding wire should be securely connected to the earth bonding point. The
resistance between the earth bonding point and grounding busbar should be less than 0.1 Ohm.
PC and measurement instruments should be grounded prior to connection to the device. The potential
difference between the equipment case and the cases of the instruments should be less than 1 V.
Prior to turning the device on, ensure that all cables are undamaged and securely connected.
Make sure the device power sources is off, when installing or removing the case.
Power supply modules installation and removal should be conducted only when the device is powered off
according to the procedure described in Section 1.12.4.
1.11.3 Electrostatic Discharge Safety Measures
In order to avoid failures caused by electrostatic discharge, we strongly recommend to wear ESD belt,
shoes and wrist strap which prevent electrostatic charge accumulation (for wrist strap, make sure that it has a
secure fit against the skin) and connect the cable to grounding prior to operation.
1.11.4 Power Supply Requirements
1.11.4.1 Power supply type requirements
The device should be powered by 48VDC power supply with grounded positive potential or by the remote
220VAC power supply.
1.11.4.2 Permissible voltage variation requirements for DC power supply
Permissible variations of 48VDC power supply voltage are from 40.5V to 57V.
When the power supply voltage is restored after being below the permissible threshold, the device
specifications will be restored automatically.