Envision Peripherals NV3128 User Manual

Page 32

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NV3128 RS-422A Machine-Control Routing Switch

2-8

SETTINGS:

ENABLE (s8):

ON: Partition defined in switchbank is enabled.
OFF: Partition is disabled.

RE-INITIALIZE BIT/MULTIDROP ENABLE (s7):
OFF:
On power-up following a shutdown of less than twenty minutes,

the system restores the crosspoint address map stored in battery-

powered RAM. In Bank 2, when bit 7 is OFF, multidrop is disabled

and point to point routing is enabled in the second partition.
ON: On power-up, the system remaps the entire switch with all

outputs connected to the NULL input defined in software. In Bank 2,

when bit 7 is ON multidrop is enabled in a shadow partition.

MONITOR LEVEL BIT (s6):
* Implemented for AES/EBU digital audio versions only. Not used on

NV3128

LEVEL ID (s5 - s1):
Bit 5 (MSB) through bit 1 (LSB) of the A switch section create a 5-

bit binary number that is the logical level of the phsyical partition. This

is the level the controller will use to address the partition.

EXAMPLES:

00001 = level 1

where 0 denotes an OFF bit and 1 denotes an ON bit.

10001 = level 17.

The range is from 0-31. Some control protocols define levels

alphabetically, in which case 0=A and 25=Z.

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