ELM Video DS4 User manual

DS4
DMX512 1x4 Splitter
User Guide
ELM Video
Technology, Inc.
DS4r3 User Guide.lwp
copyright
©
2011-2013 ELM Video Technology, Inc.

DS4 OVERVIEW
The DS4 is a DMX512 1 in 4 out splitter that takes a DMX512 output of a lighting console or any
device that transmits a DMX512 signal and actively splits the signal providing 4 separate DMX512
outputs, and offers electronic protection by separating the input device and output devices using a
Transient Voltage Suppression chip. Field serviceable: socketed IC's for easy replacement, standard
IC's available from many electronic parts suppliers, replaceable power supply, standard 5 x20mm
internal fuse. Power LED indicating power is present and 'Active' LED indicating DMX signal is
present.
CONNECTION
Loop the power cord through the strain relief. Connect the power supply to the power input connector and
apply power. Connect a DMX512 source into the input connector (5 or 3 pin) and insure the data LED is
illuminated (showing data is present). If there is an optional loop through connector, connect to other devices
or terminate with a 120 ohm terminating connector. If a loop through connector is not installed the internal
termination jumper should be bridged.Use any of the outputs to source up to 32 DMX512 devices (depending
on the devices and configuration). As with any DMX512 daisy chain, each output must be terminated at the
end of each daisy chain. Unused outputs do not have to be terminated.
OPERATION
The DS4 is simple to use. Connect a DMX512 data signal input into the input connector the same DMX512
data signal will be sent out to all 4 outputs independently. Each output can source up to 32 DMX512 devices.
There is no user operational controls.
ELM Video
Technology, Inc.
DS4r3 User Guide.lwp
copyright
©
2011-2013 ELM Video Technology, Inc.
AC In DMX512
input DMX512
outputs 1 ~ 4
Power
LED Active LED
(data indicator)
Fuse

CONFIGURATION EXAMPLE
Terminate
Terminate
Terminate
DMX512 Devices
DMX512 Devices
House
Dimmer
Adds 4
additional
outputs
DMX512
Lighting
Console DS4
DS4
1 x 4
splitter
1 x 4
splitter
ELM Video
Technology, Inc.
DS4r3 User Guide.lwp
copyright
©
2011-2013 ELM Video Technology, Inc.

PCB BLOCK DIAGRAMS
STANDARD CHIPSET
INPUT: The input stage (pins 2 and 3) connects directly to the input of the 75184 chip (IC #5).
OUTPUT: The output of IC #5, sources IC #’s 1 ~ 4 that supplies data to the output connectors 1 ~ 4. Pins 1 of
each of the output connectors are tied to the power supply common.
OPTIONAL UPGRADED CHIPSET
INPUT: The input stage (pins 2 and 3) connects directly to the input of the MAX3088 chip (IC #5).
OUTPUT: The output of IC #5, sources IC #’s 1 ~ 4 that supplies data to the output connectors 1 ~ 4. Each of
these IC’s are TVS (Transient Voltage Suppression) IC’s that provide isolation for each of the outputs.
Pins 1 of each of the output connectors are tied to the power supply common.
ELM Video
Technology, Inc.
DS4r3 User Guide.lwp
copyright
©
2011-2013 ELM Video Technology, Inc.
TVS
Isolated
Input
Output
IC’s1- 4 Pin2- Data-
Pin3- Data+
Pin 1- Power
Supply Common
Input IC
IC#5
DS4 Version A
Pin 2 Data -
Pin 3 Data +
Pin 1 Open
True
Fault
Input IC Pin 2-Data- Pin 3-Data+
Pin 1-Power
Supply Common
Input IC
IC#5
DS4 Version B
Pin 2 Data -
Pin 3 Data +
Pin 1 Open
TVS Isolated
Output IC #2
TVS Isolated
Output IC #1
TVS Isolated
Output IC #3
TVS Isolated
Output IC #4

SERVICING
FIELD SERVICE: For Experienced Technicians
Disconnect all power and data connections. Remove the 5 face plate mounting screws on the PCB side. Use
only direct replacement parts and use static discharge precautions.
To replace an IC, using a small flat screwdriver carefully remove the IC by gently lifting up between the socket and the IC
keeping the IC as flat as possible. Bend the replacement IC’s legs so they are pointing straight down and not angled
outward. Align each pin In the center of each pin hole and gently snap into place, all legs at one time, DO NOT insert at an
angle. Insure the IC is flush on the socket and all pins are inserted.
TROUBLESHOOTING
Ÿ
check if power is present via the power LED, if
not check the internal fuse.
Ÿ
check if the input has a DMX512 signal by
bypassing the DS4, if not check the DMX512
console or source.
Ÿ
If the data and power areo.k. replace the input
IC and possibly the output IC’s.
Ÿ
If all outputs don’t work
Ÿ
replace the respective output IC (i.e. output
doesn’t work 4 replace IC # 4).
Ÿ
If any one of the outputs don’t work and the
others do
Ÿ
check fuse and power connections
Ÿ
Unit won’t power up
CHECK
PROBLEM
ELM Video
Technology, Inc.
DS4r3 User Guide.lwp
copyright
©
2011-2013 ELM Video Technology, Inc.
Note - Take care not to touch the component pins or the inner pins of the connectors. Electrostatic discharge may
cause permanent damage to the unit.
5x20mm
Fuse
Input IC
4 Ouput IC’s
Face Plate
Screws Term
Jumper

SPECIFICATIONS
CHASSIS: Anodized Aluminum .093" thick RoHS compliant.
POWER INPUT: 120 VAC 60hz (Available:120-240 VAC )
FUSE: .7 ~ 1 Amp Fast Acting 5 X 20 mm
POWER: Apx .35 Amps with 4 outputs sourcing 32 loads each
DATA TYPE: DMX512 (250Khz)
DATA INPUT: DMX512 - 5 (or 3) pin male XLR, Pin 1 - (Shield) Not connected, Pin 2 Data - ,
Pin 3 Data +,
DATA OUTPUT: 4 separate DMX512 outputs - 5 (or 3) pin female XLR's, Pin 1 - Power supply
common, Pin 2 Data -, Pin 3 Data +
Dimensions: 3.7 x 6.7 x 2.1 inches
Weight: 1.5 pounds
ELM Video
Technology, Inc.
DS4r3 User Guide.lwp
copyright
©
2011-2013 ELM Video Technology, Inc.