XTBA SMART MERGE4:2 Manual Page
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Product #02603 - Issue B 11/07/2011
© XTBA 1986 – 2012
Offset Calculation
If the Smart Merge 4:2 is being used for channel shifting the offset can be
calculated by subtracting the offset number from 512 and adding 2 to the result.
e.g. if the offset switches are set for 413, then 512 minus 412 = 99, add two = 101.
Therefor channel one on DMX OUT 2 will be controlled from channel 101 on DMX
IN.
or
To get the required offset setting to output a channel onto DMX OUT 2, take the
channel number required and subtract from 512 and then add 2. e.g. We need
channel 101 on DMX IN to appear as channel one on DMX OUT 2. 512 minus 101
= 411 plus 2 = 413. So the offset address should be set for 413.
The channel address can be any where between 1 and 999. It is therefor possible
to use the Merge 4:2 as two independent merges. If two inputs are set to 001 and
two inputs are set for 513 then the result of the 001 inputs will appear on output
one and the result of 513 inputs will appear on output two.
Setting / Clearing Hold Last Frame
Any or all of the four inputs can be set to hold last frame (HLF) on data loss. With
the unit turned off setting the BCD switches to 999 and then turning the unit on will
set that input to HLF. The HLF setting is stored into non volatile memory. Inputs
set to HLF are indicated by the data LED flashing twice on power up.
To clear an inputs HLF setting set the inputs BCD switches to 000 and power up.
POWER SUPPLY
The mains input to the transformer is via a 2A a/s fuse and the transformer may be
switchLED to 120 volt operation via on board switch. A spare fuse is provided in
the input connector block on the rack unit.
19” RACK MOUNTING
The XTBA Smart Merge 4:2 is provided with a pair of ‘ears’ for fitting into a 19”
rack frame. The ears are fitted to the unit by removing the two screws on either
side at the front of the unit. The stick on rubber feet (used when the unit is free
standing) will need to be removed from the underside of the unit.
Technical Specifications 19” Rack, Front or Rear connectors
Dimensions
230/270mm inc. front handles x 430mm x 40mm
Weight
4.0 Kg
Power
190/250V AC Nominal 2A 240V AC
Data
DMX512 1986/1990
Pin Configuration
Pin 1 Common, Pin 2 minus data, Pin 3 plus data.
Pins 4 and 5 are not connected.
