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The Mixer Box – VIM-1832
Analog Sends - Exiting the Mixer Box, the sends from the Stage Box
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are grouped in 4 groups of 8. Each group is accessed via DB-25 to XLR "fan
out" cables. DB-25 TO 1/4" cables are also available for use with mixers that
only allow line level connection through 1/4" jacks. Each send exits the Mixer
Box at Line Level, maximizing headroom on the console.
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Analog Returns - The analog returns to the Stage box are made via a
single DB-25 to XLR "fan out" cable. The DB-25 connectors on both the
Analog Sends and Returns utilize standard DA-88, TASCAM balanced pin-
out configuration. Connector pin-outs are illustrated in the Appendix.
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Return Select Switch - The 8 return channels are switch-selectable
as EITHER analog OR digital. This selection is made via the recessed switch in
the center of the Mixer Box adjacent to the clock connections.
Digital Returns - The digital returns to the Stage box are made via a
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single DB-25 to XLRF cable. These inputs MUST be used in conjunction with
the Clock I/O described below in either master or slave mode. The DB-25
connectors on both the Digital Sends and Returns utilize a standard AES3
balanced pin-out configuration. Cable and connector pin-outs are illustrated
in the Appendix. NOTE: The Analog DA-88 cables are not pin compatible with
the digital cables.
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Digital Sends - The sends from the stage box are simultaneously
available as AES3 digital signals. Connections are made via 2 DB-25
connectors, with 16 channels on each. Access to the digital signal allows for
connection to digital recorders or consoles, bypassing their onboard
converters and eliminating the need for outboard converters. For digital
connection straight into a Yamaha PM5D, DM2000, DM1000 or M7CL, the
optional VCB-DDMY and VCB-DDMYIO cables connect directly to the Yamaha
MY16AE cards. Cables are available to connect to Pro Tools, or other devices.
Clock I/O - By itself, the entire Light Viper system is internally frequency
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coherent. The VIM-1832 Mixer Box contains the clock master for the system,
and the Stage Box and any other send units that are connected via the optical
splits all sync to the clock provided by the master. The LightViper 1832 system
runs natively at 24 bit/ 96k, but can also run at 24 bit / 48k with a 48k clock
input to the "clock in" connector on the VIM-1832.
The clock I/O is used when you need to synchronize with external
equipment making the entire system frequency coherent. When
using the digital returns the VIM MUST BE in either master or slave
mode with the equipment providing the digital input.
The Clock input will accept either "Word Clock" (96 KHz / 48 kHz) or
"Super Clock" (24.576 MHz / 12.288 MHz). Outputs are provided for
both clock types.
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The system can operate in Slave Mode —In this mode clock is supplied
via the "clock in" connector overriding the internal clock. The "clock
outputs" are pass-throughs for the clock connected to the input.
In Master Mode there is nothing connected to the input and external
equipment is connected to the Clock Out, making the internal clock
the master in the system.
The LED next to the Clock In connector has three states to indicate
Status.
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a single tactical grade TAC-4 connector, or a Neutrik OpticalCon
connector. In live production use, it is recommended to fit the VIM-
1832 and VIM-1032 units with ST connectors, and utilize the VPL-11,
12 or 13 panels containing 1, 2, and 3, TAC-4 panel mount connectors
respectively. These connectors have ST pigtails which connect with
the mixer box ST connectors. Always be sure to use appropriate fiber
and compatible connectors.
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direction (mixer box to stage box) CMOS or TTL data lines (up to 38.4
KHz from Stage to FOH and 2MHz from FOH to Stage) plus voltage
and GND. THIS IS NOT AN ETHERNET CONNECTOR – CONNECTING
AN ETHERNET DEVICE TO THIS CONNECTOR COULD DAMAGE THE
DEVICE. The Pin-Outs for this connector are detailed in the Appendix.
Most CMOS or TTL functions/equipment can be adapted to make use
of this connector.
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the supplied 3-Prong IEC Power Cord. The internal power supply can accept
any voltage from 90-260 at either 50 or 60Hz.
The power fuse is a 5x20mm, 1A Slo-Blo. Only replace the fuse with an exact
match. If after replacement the fuse blows again, return the unit for service.
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Off —No signal present on the Clock Input
Red —Signal is present on the Clock Input but it is neither a valid
Word Clock nor Super Clock
Green —There is either a valid Word Clock or Super Clock signal
on the Clock In
Fiber Connector - The Mixer Box can be fit with ST connectors,
Control Circuits Connector - This RJ-45 jack provides (3) bi-
Power Connector/Fuse - Power to the Mixer Box is provided with
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