NDS3332 IP QAM Modulator User Manual
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with the metal housing of device.
Grounding conductor must adopt copper conductor in order to reduce high frequency
impedance, and the grounding wire must be as thick and short as possible.
Users should make sure the 2 ends of grounding wire well electric conducted and be
antirust.
It is prohibited to use any other device as part of grounding electric circuit
The area of the conduction between grounding wire and device‟s frame should be no less
than 25mm
2
.
3.2.4 Frame Grounding
All the machine frames should be connected with protective copper strip. The grounding wire
should be as short as possible and avoid circling. The area of the conduction between
grounding wire and grounding strip should be no less than 25mm
2
.
3.2.5 Device Grounding
Connecting the device‟s grounding rod to frame‟s grounding pole with copper wire.
3.3 Wire’s Connection
3.3.1 Power cord connection
The power socket is located on the right of rear panel, and the power switch is on the left of
front panel. User can plug one end of the power cord to the socket and insert the other end to
AC power. When the device solely connects to protective ground, it should adopt independent
way, say, share the same ground with other devices. When the device adopts united way, the
grounding resistance should be smaller than 1Ω.
Caution:
Before connecting power cord to NDS3332 IP QAM Modulator, user should set
the power switch to “OFF”.
3.3.2 Signal and NMS Cable Connection
The signal connections include the connection of input signal cable and the connection of output
signal cable.
