NEC NHD-3000PVR - Manual (Page 10)

Antenna Input
Power Cord
8 Controls
Note. Connection of input/output connector in rear panel should be done while power is OFF.
Rear Panel Connectors 04
Connect the cable from an off-air TV antenna to Antenna1 input.
Connect Antenna1 loop out to Antenna2 input with RF loop cable.
Rear Side
Service Port A/V Output
Antenna Input Power Cord HDMI/DVI Output
Connect to the AC power (AC 240 ~ 250V / 50Hz).
Optical Audio Output