opticis OHM-88 User manual

Edition:2A
OHM - 88
HDMI Matrix Router
USER MANUAL

USER MANUAL
HDMI MATRIX ROUTER OHM-88
OHM-88 Manual Page 2
<OHM-88 FRONT> <OHM-88 REAR>

USER MANUAL
HDMI MATRIX ROUTER OHM-88
OHM-88 Manual Page 3
Table of Contents
1 Introduction and Installation………………………………………………………………………. 5
1.1 Key features………………………………………………………………………………………... 5
1.2 OHM-88 Shipping Content………………………………………………………………………... 5
1.3 Safety Instructions…………………………………………………………………………………. 6
1.4 Physical Description………………………………………………………………………………. 6
1.4.1 Front Panel………………………………………………………………………….……….. 7
1.4.2 Rear Panel………………………………………………………………….……….….……. 7
1.5 EDID Control and Configuration …………………………………………………………………. 8
1.6 Connecting Optical HDMI cables and modules for extended distance……………………… 9
1.7 Initializing OHM-88 and Installation Guide………………………………………………………. 9
1.7.1 Initialization………………………………………………………………………………….. 9
1.7.2 Rack Mounting……………………………………………………………………………… 10
1.7.3 Control Connection………………………………………………………………………… 10
1.7.4 RS-232 Control……………………………………………………………………………... 10
1.7.5 Ethernet Control…………………………………………………………………………….. 10
1.7.6 Direct connection of PC or video controller to the OHM-88: Use a crossover
Ethernet cable.…………………………………………………………………………… 10
1.7.7 LAN connection of OHM-88: Direct Ethernet connection…………………………….. 10
2 Communications Setup……………………………………………………………………..…… 10
2.1 Setting the Router ID of OHM-88………………………………………………………………… 10
2.2 Front Panel Interface……………………………………………………………………………… 11
2.3 CREATE Mode……………………………………………………………………………………. 11
2.4 PREVIEW Mode………………………………………………………………………………….. 11
2.5 CANCEL Mode…………………………………………………………………………………… 12
2.6 FUNCTION Mode………………………………………………………………………………… 12
Press FUNCTION to view features –pressing FUNCTION repeatedly will cycle the
following Features…...…………………………………………………………………………...12
2.6.1 EDID Read/Write: press FUNCTION key once………….……………………………. 12
2.6.2 MONITOR OUTPUT SELCTION –To verify the video source press FUNCTION
two times.………………………………………………………………………………….. 13
2.6.3 RS-232 BAUD RATE: press FUNCTION three times…………………………………. 13
2.6.4 Gateway: press FUNCTION four times………………………………………………… 13
2.6.5 Subnet Mask: press FUNCTION five times …………………………………………… 14
2.6.6 IP Address: press FUNCTION six times………………………………………………… 14
2.6.7 MAC Address: press FUNCTION seven times…………………………………………. 14
2.6.8 Port Number: press FUNCTION eight times……………………………………………. 15
2.6.9 FACTORY MODE: press FUNCTION nine times……………………………………… 15
2.7 Serial Communication…………………………………………………………………………… 15
2.7.1 HyperTerminal…………………………………………………………………………….. 15
2.7.2 Telnet ……………………………………………………………………………………… 18
2.7.3 Launching Telnet Session ………………………………………………………………. 18
2.8 Ethernet Control…………………………………………………………………………………. 19
2.8.1 SETTING THE IP ADDRESS of the PC………………………………………………… 19
3 Operation………………………………………………………………………………………… 21
3.1 Front Panel Operation…………………………………………………………….…………….. 21
3.2 Command Line Operation………………………………………………………………………. 23
3.2.1 Create……………………………………………………………………………………… 25
3.2.2 Preview: Shows all Input-Output configurations……………………………………… 26
3.2.3 Cancel: Cancels configuration of outputs for each Input……………………………. 26
3.2.4 Upload Data Request: Uploads connection data to the controller…………………. 27

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3.2.5 Rolling command………………………………………………………………………… 27
3.2.6 Upload Router ID………………………………………………………………………… 29
3.2.7 Rolling Stop……………………………………..…………………………………………. 29
3.2.8 Check Connection…………………………………………………………………………. 29
3.2.9 Upload One Channel Data Request…………………………………………………….. 30
3.2.10 Read Output Device EDID……………………………………………………………….. 30
3.2.11 Read Input EEPROM EDID……………………………………………………………… 31
3.2.12 EDID Write…………………………………………………………………………………. 31
3.2.13 Default EDID Setting……………………………………………………………………... 32
3.2.14 Baud rate Setting…………………………………………………………………………. 32
3.2.15 Monitoring…………………………………………………………………………………. 33
3.3 Proprietary PC Software Installation ……………………………………….…………….…… 34
3.3.1 Installation of PC Application…………………………………………………………… 34
3 .4 Proprietary PC Software Operation…………………………………………………….....….. 36
3.4.1 PC Operation using RS-232………………………..…………………………………… 36
3.4.2 PC Operation using Ethernet ……………………………………….…………………. 42
3.4.3 Sytem Menu………………………………………………………………………….…… 48
3.4.4 Function Menu……………………………………………………………………….…… 49
3.4.5 Title Folder –Initial screen of PC Software………………………….………….……. 50
3.4.6 Matrix Control Folder…………………………………………………………...………. 51
3.4.7 EDID Folder……………………………………..……………………………...….……. 52
3.5 Matrix Control Operation………………………………………………………………………. 53
3.5.1 Select Input Chanel……….………………………..…………………………….……… 53
3.5.2 Easy link for Input CH to all Output CH ……………….………….………..…………. 56
3.5.3 Select Monitoring..…………………………………………………………….………… 57
3.5.4 Save Switching Pattern………………………………………………………..………… 58
3.5.5 Rolling Function ………………………………….…………………….……..…………. 60
3.5.6 Select Rolling Mode……………………………………………………………..………. 61
3.5.7 Pattern Rolling Mode……………………………………………………………..……... 61
3.6 EDID Setting……………………………………………………………………………..……… 62
3.6.1 Features………………………………………………………………………….………. 62
3.6.2 Importance of EDID –Example…………………………………………………..….... 62
3.6.3 Setting EDID……………………………………………………………………….…….. 62
3.6.4 Write EDID data of Output Device to Input CH EEPROM…………………….…..…63
3.6.5 Read EDID…………………………………………………………………………...…… 64
3.6.6 Write the read EDID Data……………………………………………………………….. 65
3.6.7 Save the edited EDID Data and open the saved file…… ……………………...….…66
3.6.8 EDID EDITOR……………………………………………………………………..…..…. 67
4 Troubleshooting………………………………………………………………………….……… 69
5 Features………………………………………………………………………………….....……. 70
6 Specification…………………………………………………………………………………..…. 70
7 Firmware downloading……………………………………………………………………..….…71

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1 Introduction and Installation
OHM-88 is a high speed cross-switch with 8 HDMI inputs and 8 HDMI outputs housed in a rugged-
ized metal enclosure to protect against harsh environments.
1.1 Key features:
Eight (8) HDMI single-link inputs and outputs
Pixel resolution up to WUXGA (1920x1200) @ 60Hz refresh ratio –with 1.65Gbps trans-
mission bandwidth
Dynamic EDID management –adapts to overall power management of the system
Restores the default EDID to Input port
Reads EDID from display and stores EDID to Input port via EEPROM
Long distance extension of HDMI Input and Output by Optical HDMI cables or modules
Re-Clocking of R,G,B of HDMI inputs and outputs
Various Control Interfaces:
Front panel key input
Input commands through RS232 and LAN
Graphical user interface using Ethernet and Proprietary PC software in the shipped
system
Hierarchical connection of multiple OHM-88 - up to 3 levels to increase the number of
display connections or source connections
DIP switch for up to 255 different ID settings for multiple use of OHM-88 over RS232
connection
IP setting for Ethernet –point-to-point and local network control
1.2 OHM-88 Shipping Content:
OHM-88 Mainframe: 1 EA
AC/DC power adaptor (12V/5A,
AC110V-240V): 1 EA
AC power cord: 1 EA
User Manual: 1 EA
PC control software CD: 1 EA
Firmware download cable(USB):
1 EA
RS-232 cable (crossed type): 1 EA
RJ-45 UTP cable (crossed type):
1 EA
Rack ear: 2 EA

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1.3 Safety Instructions
Use of the equipment in a manner not specified by the manufacturer may result in irre-
coverable damage.
Use the assigned power cord or power adaptor shipped with the system.
Connect the power cord to the normal and safe outlet.
Keep the unit away from liquid, magnetic and combustible substances.
Do not place heavy weight on the unit.
Move away from noisy environment such as vibration or impact.
Do not install the unit vertically.
Do not disassemble the unit.
When malfunction or breakdown occurs, contact factory immediately.
1.4 Physical Description
1.4.1 Front Panel
OHM-88 chassis is mountable on a 19”standard rack with rack ears. Control
keys, Input-Output buttons and the status LCD display, are placed on the front
panel as shown in Figure 1-1.
Control keys: ①
CREATE –Configure Input-Output setup
PREVIEW –Displays current status of Input-Output configuration
CANCEL - Resets all Outputs configured with an Input or Reject any key in-
puts
ENTER - Accepts keyed inputs and completes configuration of Input-Output
setup
FUNCTION - Configures IP for Ethernet, baud rate for RS232 and EDID
Input-Output Buttons:
Eight (8) LED inputs: ②
Eight (8) LED outputs: ③
Status display: LCD displays the control status in 20x4 text mode: ④
POWER ON/OFF button: ⑤

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<OHM-88>
Figure 1-1 Front Panel
1.4.2 Rear Panel
All Input ports, Output ports, interface ports and power connections are placed on
the rear panel as follows;
Eight (8) single link HDMI inputs: ①
Eight (8) single link HDMI outputs: ②
DIP switch - 8 bits to set ID (identifier) in case of multiple connection of
OHM-88: ③
RS-232 Serial port: ④
10/100 Base Ethernet port: ⑤
Firmware download port: ⑥
DC power receptacle: ⑦
MONITORING HDMI port –monitors a designated source for test purpose:
⑧
[Note] For OHM-88, Output #1 will be disconnected automatically when monitoring port is
connected and working.
④
①
④
②
④
③
④
⑤
④

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<OHM-88>
Figure 1-2 Rear Panel
1.5 EDID Control and Configuration
EDID (Extended Display Identification Data) is an information set that is provided by a
display to describe its capabilities to a graphic source. It enables a graphic source to
identify the connected display.
The information set includes: manufacturer, product type, phosphor or filter type, timings
supported by the display, display size, luminance data and (for digital displays only) pixel
mapping data.
Once the graphic source reads the information set (usually during the booting process),
the EDID determines the optimal format for a connected display.
OHM-88 supports storing of EDID information to an EEPROM for each Input by dedicat-
ed PC software.
OHM-88 has two-way EDID settings, default EDID from factory and direct readout of
stored EDID of any target display. The default EDID setting from the factory is 1080p
(1920 x 1080) @ 60Hz for all inputs.
③
①
②
④
⑤
⑥
⑦
⑧

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Figure 1-3 Concept drawing for setting EDID in OHM-88
As depicted in Figure 1-3, once EDID is configured, each EDID is stored in EEPROM at
the front of the HDMI Input. As a result, the video sources are able to read EDID from
the EEPROM during boot-up; even though the OHM-88 and connected displays are not
powered on yet.
1.6 Connecting Optical HDMI cables and modules for extended distance
OHM-88 supports connection of Optical HDMI cables or modules to all inputs and outputs.
The use of copper HDMI cables over 3m (10ft.) is not recommended.
1.7 Initializing OHM-88 and Installation Guide
1.7.1 Initialization
1) Plug the provided AC power cord to the AC/DC power adaptor then plug the DC
cord to the +12VDC connector on the rear panel; make sure that the arrow mark
on the connector of the DC cord is aligned.
2) Push POWER button on the front panel then observe:
Red LED (on the button) –will light up
Display –will display “OHM-88……….Initializing”
Green and Red lights on the Input and Output –will sweep on.
Display –will show “USER MODE”
The system is now ready to accept commands.

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1.7.2 Rack Mounting
Before installing cables, attach two rack ears on left and right side of OHM-88
using the supplied screws.
1.7.3 Control Connection
Commands and functions of OHM-88 are transferred through the RS-232 and
Ethernet connection.
1.7.4 RS-232 Control
Connect the OHM-88 to a video controller or PC with the supplied RS-232 cable.
1.7.5 Ethernet Control
Connect the OHM-88 to a video controller or PC with the RJ-45 connector/cable.
1.7.6 Direct connection of PC or video controller to the OHM-88: Use a crossover
Ethernet cable.
Typically, a PC is connected to the network and configured for dynamic IP ad-
dress by a network DHCP server. If the PC is connected directly to the OHM-88,
the network server will not be able to address the PC.
In this case, the PC should be manually set in a static IP address. Refer to Set-
ting the PC IP address in Chap. 2.8.1.
1.7.7 LAN connection of OHM-88: Direct Ethernet connection.
OHM-88 is configured at the factory with the default IP address of 192.168.0.88.
Before connecting to your network, verify the IP address on your network.
The IP address can be reconfigured by front key buttons or command lines over
RS 232 and Ethernet.
2 Communications Setup
2.1 Setting the Router ID of OHM-88
If multiple units of OHM-88 with a video controller or PC controller are used, each
OHM-88 should be identified with the DIP switch located on the rear panel marked as
Router ID. Each DIP switch has 8 digits, one (1) at the up position and zero (0) at the
down position; possible ranges are 000 to 255 and the default factory setting is 255.

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Example Setting
In case of 000 In case of 001 In case of 255
All command codes are required to have the Router ID in its header. For more details,
refer to the command code instruction in Chapter. 3.2.
2.2 Front Panel Interface
All communication with OHM-88 is possible using the front input keys - without video
controller or control PC.
Before pressing control keys, make sure that the LCD display shows USER
MODE.
CREATE, PREVIEW and CANCEL keys are activated by pressing each key
- the activated key is executed by pressing ENTER key.
The FUNCTION has the ability to select multiple features on the OHM-88.
Repeatedly pressing the FUNCTION key will display each feature on the LCD
display.
To save the selected feature, press ENTER - to escape current setting, press
another control key; i.e. CREATE or PREVIEW.
2.3 CREATE Mode
Configures Input-Output connections for cross-switching.
1) Press CREATE button once to activate (orange color LED is on) - LCD will display
the current Input and Output configuration.
2) Select and Press an input key (the respective Green LED is on) –LCD will display
current configured Output (Red LED is on).
3) Press single or multiple Output buttons to select desired outputs (Red LED is on for
each selected Output button).
4) Outputs can be deselected by pressing the respective Output button (Red LED is off)
5) Press ENTER to save the selected configuration.
6) To configure the next Input to Output or outputs, repeat steps 1 to 5.
2.4 PREVIEW Mode
PREVIEW mode shows current Input-Output configuration.
1) Press PREVIEW to see current Input-Output connection status on the LCD display.
2) Press any Input button (Green LED is on) to see the current connected Output (indi-
cated by Red LED is on)
3) To preview status of another Output, press another Input button.
To see the status of all Input-Output connections, press PREVIEW then ENTER.

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2.5 CANCEL Mode
To Cancel each Input-Output configuration:
1) Press CANCEL then press the desired Input button to be cancelled. The configured
Output buttons LED will be on.
Press ENTER to complete cancellation.
2.6 FUNCTION Mode
Press FUNCTION to view features –pressing FUNCTION repeatedly will cycle
the following features:
EDID Read/Write
Monitor Output Selection
RS-232 Baud Rate
Gateway
Subnet Mask
IP Address
Mac Address
Port Number
Factory mode
2.6.1 EDID Read/Write: press FUNCTION key once
Reads EDID from connected displays and stores information to Input ports
EEPROM.
=========Function Mode========
EDID Read/Write
IN : 1. 2. 3. 4. 5. 6. 7. 8
OUT: 1. 2. 3. 4. 5. 6. 7. 8
IN: INPUT Chanel , OUT : OUTPUT Chanel
Press Front panel INPUT key and choice channel, than choice Output channel
which one need changing.
The Under Bar mark represents selected and activated.(1~8chanel)
Example1: Choice INPUT 1 - OUTPUT 1, INPUT 2 - OUTPUT 2 than Press
Enter Key, will Display 1,2 channel’s EDID Read/Write
Example2: Choice INPUT 1,2,3,4,5,6,7,8 –OUTPUT 1, than Press Enter key,
system will be read the first (1)output channel EDID Data, and write to the
INPUT 1~8 channel EEPROM.
Press ENTER button to complete the configuration, store the information and
execute the process.

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2.6.2 MONITOR OUTPUT SELECTION –To verify the video source press FUNCTION
key twice.
1) Connect a display to the MONITORING port and any video sources to the HDMI
Input ports on the rear panel.
2) Press the FUNCTION key once –the LCD displays:
============ Function ===========
Monitor Output sel.
Old Input Channel: 1
New Input Channel:
3) Press Input button of the Input to be monitored.
4) Press ENTER to finish the process.
[Note] For OHM-88, Output #1 will be disconnected automatically when monitoring port is
connected and working.
2.6.3 RS-232 BAUD RATE: press FUNCTION three times
Press Input 1 button for 19200
Press Input 2 button for 38400
Press Input 3 button for 57600
Press Input 4 button for 115200
Press ENTER to complete the process and return to the User mode.
=========Function Mode========
RS-232 Baud Rate
Old Baud Rate: 19200
New Baud Rate: 19200
[Note] Baud Rate of 19200 bps is highly recommended.
2.6.4 GATEWAY: press FUNCTION four times
The Under Bar mark represents selected and activated.
Pressing Input 1 button repeatedly changes the selected number from 0, 1, 2...9.
The Input 2 button decreases the number.
Input 3 and 4 buttons moves the Under Bar left and right.
=========Function Mode========
Gate Way
192. 168. 000. 001
192. 168. 000. 001
Factory setting is 192.168.000.001.
Press ENTER button to complete the process and return to the User mode.

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2.6.5 SUBNET MASK: press FUNCTION five times
The Under Bar mark represents selected and activated.
Pressing Input 1 button repeatedly changes the selected number from 0, 1, 2...9.
The Input 2 button decreases the number.
Input 3 and 4 buttons moves the Under Bar left and right.
=========Function Mode========
Subnet Mask
255. 255. 255. 000
255. 255. 255. 000
Factory setting is 255. 255. 255.000.
Press ENTER button to complete the process and return to the User mode.
2.6.6 IP ADDRESS: press FUNCTION six times
The Under Bar mark represents selected and activated.
Pressing Input 1 button repeatedly changes the selected number from 0, 1, 2...9.
The Input 2 button decreases the number.
Input 3 and 4 buttons moves the Under Bar left and right.
=========Function Mode========
IP Address
192. 168. 000. 088
192. 168. 000. 088
Factory setting is 192. 168. 000. 088.
Press ENTER button to complete the process and return to the User mode.
2.6.7 MAC ADDRESS: press FUNCTION seven times
In computer networking, a Media Access Control address (MAC address) is a
unique identifier assigned to most network adapters or network interface cards by
the manufacturer for identification, and used in the Media Access Control proto-
col sub layer. If assigned by the manufacturer, a MAC address usually encodes
the manufacturer's registered identification number. It may also be known as an
Ethernet Hardware Address (EHA), hardware address, adapter address, or
physical address.
There are three numbering spaces, managed by the Institute of Electrical
and Electronics Engineers (IEEE), which are in common use for formulating
a MAC address:
OHM-88 is shipped with a default MAC ADDRESS. The MAC ADDRESS of
OHM-88 can be edited, however, it is strongly not recommended.
Editing MAC ADDRESS
The Under Bar mark represents selected and activated.
Pressing Input 1 button repeatedly changes the selected number from 0,
1, 2...9.

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The Input 2 button decreases the number.
Input 3 and 4 buttons moves the Under Bar left and right.
2.6.8 PORT NUMBER: press FUNCTION eight times
The Under Bar mark represents selected and activated.
Pressing Input 1 button repeatedly changes the selected number from 0, 1, 2...9.
The Input 2 button decreases the number.
Input 3 and 4 buttons moves the Under Bar left and right.
=========Function Mode========
Port Number
Old Data: 03000
New Data: 03000
Factory setting is 03000.
Press ENTER button to complete the process and return to the User
mode.
2.6.9 FACTORY MODE: press FUNCTION nine times
Press ENTER to reset and restore factory default settings.
2.7 Serial Communication
2.7.1 HyperTerminal
OHM-88 provides command line interface through serial port, RS-232.
Hyper Terminal is an effective serial emulation software to communicate with
OHM-88 when Microsoft Windows operating system is used to control OHM-88.
Hyper Terminal connection procedures:
1) Connect the OHM-88 to a PC as described in section RS-232 Control.
2) Select Start > Programs > Accessories > Communications > HyperTerminal

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Figure 2-1 HyperTerminal Access
3) Connection Description Dialog: Enter a name and choose an icon.
Figure 2-2 Connection Description Dialog
4) Selecting OK displays the Connect To dialog. In the Connect To dialog box,
ignore the Country, Area Code and Phone Number fields and select the
available COM port to which OHM-88 is connected.

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Figure 2-3 Connect To Dialog
5) Select OK to go to the COM Properties dialog box.
Figure 2-4 COM Properties Dialog
6) Configure the port settings as follows;
Bits per second (baud rate): 19200 (recommended)
Data bits: 8
Parity: None
Stop bits: 1
Flow control: None

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7) Select OK to display the HyperTerminal window
8) Press ENTER on OHM-88 to begin communication with OHM-88
9) Type serial command set. (Refer to Chap. 3.2)
2.7.2 Telnet
Telnet is a terminal emulation program for TCP/IP networks such as the Internet.
The Telnet program runs on your computer and connects your PC to a server on
the network. You can then enter commands through the Telnet program and they
will be executed as if you were entering them directly on the server console. This
enables you to control the server and communicate with other servers on the
network
2.7.3 Launching Telnet Session
1) Select Start menu and select Run.
2) Type command as shown below.
Figure 2-5 Run Windows

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3) Select OK to open the command window.
4) Type the command: telnet 192.168.0.88
[Note] 192.168.0.88 is the default IP address of OHM88. Change IP address
as needed. (Refer to Chap. 2.6.6 and 2.8)
5) Press ENTER: “HDMI Matrix Router Connected”will be displayed.
6) Type serial command set. (Refer to Chap. 3.2)
Figure 2-6 Telnet connected
2.8 Ethernet Control
The OHM-88 can be controlled through the 10/100 base Ethernet port using either
graphic user interfaces or a command line interface.
The graphic user interfaces uses proprietary PC software.
The physical connection of OHM-88 can be made on the standard LAN or point to point
connection.
The command line interface uses a Telnet session to a private port.
To connect OHM-88 to Ethernet, specify a static IP address for OHM-88 (Refer to Chap.
2.6.6). The default IP address is 192.168.000.088.
2.8.1 SETTING THE IP ADDRESS of the PC
If the PC is connected to the OHM-88 through the 10/100 Base Ethernet port, a
static address should be configured on the PC:
1) Use Ethernet crossover cable (provided with OHM-88 system) for point
to point direct connection between PC or controller and OHM-88 or use
Ethernet strait cable to connect OHM-88 on LAN.
2) From the PC: select Start menu, select Control Panel.
3) In the Control Panel, select Network Connections.
In Network Connections, right click on Local Area Connection and select
Properties tab.

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Figure 2-7 Local Area Network Properties
Select Internet Protocol (TCP/IP) and click on Properties. In the Internet Protocol (TCP/IP) Properties,
click Use the following IP address radio button. Enter IP address compatible with the current IP address
of the OHM-88.
For point to point direct connection, if the IP address of OHM-88 is
192.168.000.088, the PC IP address should be chosen as 192.168.000.nnn;
where nnn ranges 000 to 255 except 088. (Refer to Chap. 2.6.6)
For LAN connection, maintain existing PC IP address then consult you network
manager to obtain available IP address for OHM-88.
Figure 2-8 PC IP address setting
4) Select OK to terminate IP setup session.