Belden Grass Valley NV8900, User Manual

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10
NV8900
The first 3 switches control the overall audio level of the unit:
Switch Switch
3 2 1 Level 3 2 1 Level
0 0 0 +24 dBu 1 0 0 +16 dBu
0 0 1 +22 dBu 1 0 1 +14 dBu
0 1 0 +20 dBu 1 1 0 +12 dBu
0 1 1 +18 dBU 1 1 1 +10 dBu
Switches 4–6 are reserved for future use. It does not matter which way these switches are
set.
Switch 7, when it is OFF, enables both MADI inputs. When switch 7 is ON, only the primary
MADI input is enabled. (Switch 7 overrides the unit’s failover behavior. When the switch is
ON, the unit ignores the secondary input and the secondary MADI LED is dark.)
Switch 8 is for factory testing. Leave it off.
Installation
AES Interfaces
The AES interfaces are small and lightweight. It is sufficient to mount them in a 19” rack
with suitable screws.
Analog Audio Interfaces
The analog audio interfaces are large and somewhat heavy and require special hardware
that attaches to, and supports, the rear of the units. There are two metal pieces for each side
of the NV8900:
• ME1714- xx — an 8” extension plate, with screw holes, that attaches to the side of the
NV8900.
• ME1745- xx — a small (1.72”) metal plate that attaches to the rear frame posts.