Grass Valley NV8900 Series v.1.3 - Manual (Page 17)

9
NV8900
User’s Guide
Other LEDs
Each MADI input is represented by an LED at the front of the unit. The color of the LED repre-
sents the state of the MADI input:
• Green — the MADI input is good and active.
• Amber (or orange) — the MADI input is good and stand-by (inactive).
• Red — the MADI input is bad.
 These LEDs behave differently from those of the AA-to-MADI interface.
The reference signal is represented by an LED. This LED is green when the reference is good and
red when it is not.
An alarm LED is off under normal operation but turns red for the following conditions:
• Overtemperature
• MADI output failure
• Reference is bad or missing
Connectors
At the rear of the MADI-to-AA interface are signal connectors. There are 2 MADI outputs (BNCs),
two video reference connectors (BNC, loop-through), and 8 DB25s for analog audio input.
Each DB25 supports 8 analog audio outputs. The 8 outputs of a connector correspond to an
enclosed section of the labeling on the front of the unit. For instance, first DB25 connector is for
outputs 1–8 and the corresponding markings on the front of the unit are pair 1/2, 3/4, 5/6, and
7/8.
The power connectors, serial port, and Ethernet port are described under Installation on
page 13.
Each power connection is represented by an LED at the front of the unit. When the LED is green,
its power supply circuit is good, and when the LED is off, the power supply circuit is bad.
The MADI inputs are identical.
The video reference connectors are “loop-through” allowing you to “daisy-chain” a reference
signal to multiple devices. See
Reference Specifications on page 19.
1
ON
2 3 4 5 6 7 8
SDO8
CTRL PS1
PS2
DC IN
+12V
E146905
ETHERNET
MADI OUT VID REF
CONFIG
41-48 49-56
ANALOG AUDIO
INPUTS
25-32 17-24 9-16 1-8
57-64 33-40
Analog Inputs (DB25)
Video Reference
(Loop-Through)
MADI Output (2)
DIP Switches (8)