IRT IRT-6630-DTR User manual

IRT-6630-DTR
I.R.T. Communications Pty L t d | www .irtcommunications. c o m
Page 1 of 22 Revision 01
User Manual
3G HD SD-SDI ASI Fibre Optic Transceiver

IRT-6630-DTR
I.R.T. Communications Pty L t d | www .irtcommunications. c o m
Page 2 of 22 Revision 01
3G/HD/SD-SDI / ASI Fibre Optic Transceiver
Revisi n Hist ry:
Revisi n Date By Change Descripti n Applicable t :
00 29 07 2014 AL Original Issue. Firmware ≥
Revision 1.0
01 07 02 2018 AL Updated to I.R.T. Communications company name. Firmware ≥
Revision 1.0

IRT-6630-DTR
I.R.T. Communications Pty L t d | www .irtcommunications. c o m
Page 3 of 22 Revision 01
USER MANUAL
Table f C ntents:
Secti n Page
Revision History 2
Operational Safety 4
openGear® Introduction 5
General Description 6
Technical Specifications 7
Configuration 8
DIP Switch Settings 8
Installation 9
Signal Connections 9
Fibre Optics Connection 9
Front Edge LED and Switch Locations 10
Rear Assembly Layouts 11
Operation 12
Figure 1: Attenuation versus wavelength 13
Front Edge LED Indicators 13
DashBoard™ Software Control 14
IRT-6630-DTR DashBoard™ Screenshots 14
SNMP Software Control 17
IRT-6630-DTR SNMP Functions 17
Maintenance & Storage 22
Warranty & Service 22
This instruction book applies to units fitted with firmware ≥ Revision 1.0.

IRT-6630-DTR
I.R.T. Communications Pty L t d | www .irtcommunications. c o m
Page 4 of 22 Revision 01
OPERATIONAL SAFETY
WARNING
Operation of electronic equipment involves the use of voltages and currents that
may be dangerous to human life. Note that under certain conditions dangerous
potentials may exist in some circuits when power controls are in the OFF position.
Maintenance personnel should observe all safety regulations.
Do not make any adjustments inside equipment with power ON unless proper
precautions are observed. All internal adjustments should only be made by suitably
qualified personnel. All operational adjustments are available externally without
the need for removing covers or use of extender cards.
Optical Safety
The light emitted from the LASER diode used in this system is
invisible and may be harmful to the human eye. Avoid looking
directly into the fibre optic cable or connectors or into the
collimated beam along their axis when the device is in operation.
Operating the LASER diode outside of its maximum ratings may
cause device failure or a safety hazard.
DANGER
Avoid direct exposure to beam
Peak power 2 mW
Wavelength 1270–1610nm
Class 1 LASER Product
Invisible LASER radiation-

IRT-6630-DTR
I.R.T. Communications Pty L t d | www .irtcommunications. c o m
Page 5 of 22 Revision 01
penGear® INTRODUCTION
Developed by Ross Video, openGear® is a standard where various manufacturers can design their equipment to fit
a common frame allowing the end user to mix and match the various openGear® cards available in the market
place together in one frame. This allows a single frame to be used instead of multiple different vendor’s frames
that each would otherwise be using their own proprietary standard.
A simple to use monitoring and control software called DashBoard™ is a free program downloadable from the
openGear® website (www.opengear.tv) that allows the user to remotely monitor and control an openGear® type
card fitted within an openGear® frame that meets the openGear® standard for DashBoard™ control. A link is also
supplied via the I.R.T. Communications website (www.irtcommunications.com) under the openGear® navigation
section.
I.R.T. Communications’ openGear® cards are designed to meet the openGear® standard for mounting within the
openGear® OG3-FR frame and its earlier version DFR-8300 frame, and is fully compliant with DashBoard™ control.
The openGear® frame manual, DashBoard™ control software and information regarding the frame’s power
supplies, controller card and frame accessories are available for download at the openGear® website.
The term openGear® is a registered trade mark of Ross Video Limited.
DashBoard software Control™ is a trade mark of Ross Video Limited.

IRT-6630-DTR
I.R.T. Communications Pty L t d | www .irtcommunications. c o m
Page 6 of 22 Revision 01
GENERAL DESCRIPTION
The IRT-6630-DTR is a transmit receive (transceiver) module designed principally for use as a serial data fibre optic
transmission link for 3G-SDI, HD-SDI or SD-SDI applications conforming to SMPTE standards 424M, 292M and
259M-C using 9 125 μm single mode fibre. This enables the use of space saving fibre optic cable for reliable
transmission of digital video signals over lengths greater than can be achieved with coaxial cable.
In addition, the link may be used for ASI transport streams for use with MPEG compressed video streams or other
270 Mb s type data.
The transmitter section features automatic input cable equalisation. A “keep link alive” signal is available to
maintain optical link operation when no electrical input is present.
Two inputs are provided with automatic changeover to input 2 on loss of input 1 for input signal redundancy.
The receiver section uses an APD detector with signal conditioning and reclocking circuits. The data rate is
automatically set to match the 3G-SDI, HD-SDI or SD-SDI ASI rates dependent on the actual input data rate to the
transmitter.
The IRT-6630-DTR can be used as an independent transmitter and receiver at the same time allowing bi-directional
operation over two single mode fibres. Being independent from each other, the transmit and receive signals can be
of mixed signal types.
Optionally a 1310 1550nm WDM
2, 3
optical combiner can be fitted to allow for combined use on a single fibre.
The IRT-6630-DTR is designed to fit the openGear® standard 2RU frames which allow a mixture of cards from
various manufacturers to be mounted within the same frame.
The DashBoard™ control software is available as a free download.
Standard features:
• Transp rts 3G-SDI, HD-SDI, SD-SDI r ASI signal rates .
• Single r bi-directi nal perati n p ssible with independent transmit and receive functi ns n the
ne card.
• Path lengths up t 30 dB
1
ptical path l ss using 9/125μm single m de fibre .
• Aut matic change ver switching f input f r signal redundancy n Tx.
• Opti nal n-b ard WDM
2, 3
ptical c mbiner f r use n a single c mm n fibre.
• DashB ard™ s ftware m nit ring and c ntr l.
NOTE: 1 27dB path loss at 3G. Typically >30dB at HD and SD. Fitted with APD detector.
2With WDM option fitted for combined use on a single fibre, optical path loss is reduced by
approximately 2dB.
3With WDM option fitted, when operating as a pair, one IRT-6630-DTR must be fitted with a
1310nm laser and the other a 1550nm laser.
BLOCK DIAGRAM IRT-6630-DTR SIGNAL PATH
Fibre Link
9-27dB path loss at 3G
(>30dB at HD and SD)
IRT-6630-DTR
(Tx Rx)
I P 1
I P 2
Fibre O P
Fibre I P
O P 1
O P 2
IRT-6630-DTR
(Tx Rx)
O P 1
O P 2
Fibre I P
Fibre O P
I P 1
I P 2
3G-SDI
HD-SDI
SD-SDI
ASI
3G-SDI
HD-SDI
SD-SDI
ASI
3G-SDI
HD-SDI
SD-SDI
ASI
3G-SDI
HD-SDI
SD-SDI
ASI

IRT-6630-DTR
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Page 7 of 22 Revision 01
TECHNICAL SPECIFICATIONS
Transmitter:
Input serial data signal 2.97 Gb s (3G-SDI) to SMPTE 424M;
1.485 Gb s (HD-SDI) to SMPTE 292M;
270 Mb s (SD-SDI) to SMPTE 259M-C and DVB-ASI.
Input impedance 75 Ω.
Input return l ss > 15 dB 5 MHz to 1.5 GHz;
> 10 dB 1.5 GHz to 2.97 GHz.
Aut matic cable c mpensati n > 100 m at 2.97 Gb s (3G-SDI) with Belden 1694A (typ. 110m);
> 100 m at 1.485 Gb s (HD-SDI) with Belden 1694A (typ. 160m);
> 250 m at 270 Mb s (SD-SDI ASI) with Belden 8281 (typ. >300m).
Input c nnect r 2 x BNC on rear panel, with I P 1 taking priority & I P 2 automatically switching in
on loss of I P 1.
Output c nnect r 1 x BNC (OUT 1) on rear panel, link selectable Tx input monitor, or nil if set as a
second Rx output.
Receiver:
Number f utputs 2 data reclocked,
AC coupled.
Output level 800 mV ± 10%.
Output impedance 75 Ω.
Output return l ss > 15 dB 5 MHz to 1.5 GHz;
> 10 dB 1.5 GHz to 2.97 GHz.
Output rise and fall time < 135 ps at 2.97 Gb s and 1.485 Gb s;
> 0.4 ns and < 1.5 ns at 270 Mb s.
Intrinsic jitter < 0.3 UI at 2.97 Gb s reclocked;
< 0.2 UI at 1.485 Gb s reclocked;
< 0.1 UI at 270 Mb s reclocked.
Output c nnect r 2 x BNC on rear assembly, or 1 x BNC if OUT 1 has been link selected as an input
monitor.
Optical:
Optical utput 0 dBm +4.5 -0 dB CWDM DFB laser.
Optical input APD detector, -9 to -27 dBm input level at 3G-SDI, typically < -30 dBm at HD SD-SDI.
Available wavelengths 1310nm or 1550nm. Other wavelengths available upon request.
Optical path l ss
4, 5
9 to 27 dB at 3G-SDI, typically >30 dB at HD SD-SDI, APD detector.
(Optical path loss = Laser O P power – Detector I P power)
Optical fibre Designed for use with 9 125 μm single mode fibre.
Optical c nnect r 2 x LC PC (standard) on rear – direct connection to main card, 1 Tx and 1 Rx;
1 x SC PC (standard) with WDM option fitted.
P wer Requirements:
V ltage + 12 Vdc.
P wer c nsumpti n < 5 VA.
Other:
Temperature range 0 - 50° C ambient.
Mechanical Suitable for mounting in an openGear® 2RU rack chassis.
Dimensi ns ( penGear® standard) 33.6 mm x 2U x 325 mm.
Supplied access ries Rear connector assembly.
Ordering IRT-6630-DTR IRT-6630-DTR, programmed with DashBoard™ control.
WDM rder c des IRT-6630-DTR 1310 WDM & IRT-6630-DTR 1550 WDM.
NOTE: 4 Typical values based using DFB laser. Optical attenuator supplied for when optical
path loss is less than 9dB for APD detector.
5 With WDM option fitted for combined use on a single fibre, optical path loss is
reduced by approximately 2dB.
6 With WDM module fitted, when operating as a pair, one IRT-6630-DTR must be
fitted with a 1310nm laser and the other a 1550nm laser.
Due to our policy of continuing development, these specifications are subject to change without notice.

IRT-6630-DTR
I.R.T. Communications Pty L t d | www .irtcommunications. c o m
Page 8 of 22 Revision 01
CONFIGURATION
DIP Switch settings:
DIP Switch
Tx Input Rate SW1-1 SW1-2
3G HD SD (Auto detect) OFF OFF
SD only ON OFF
HD and SD only OFF ON
Bypass Reclocker ON ON
DIP Switch
Rx Output Rate SW1-3 SW1-4
3G HD SD (Auto detect) OFF OFF
SD only ON OFF
HD and SD only OFF ON
Bypass Reclocker ON ON
SW1-5 OFF Enable Laser - laser is always enabled: ‘keep link alive’ signal when no
input signal is present.
ON Auto Laser – laser is enabled only when an input signal is present.
SW1-6 OFF Enable automatic input changeover on loss of primary input (IN 1) to Tx.
(IN 1 takes priority over IN 2).
ON Disable automatic input changeover.
SW1-7 OFF DIP switch control.
ON DashBoard™ control.
SW1-8 OFF OUT 1 acts as the Rx output (both OUT 1 and OUT 2 are Rx outputs).
ON OUT 1 acts as the Tx monitor port (only OUT 2 is the Rx output).
SW2-1 t SW2-8 Not Used.
1
2
3
4
5
6
7
8
ON
DIP
1
2
3
4
5
6
7
8
ON
DIP
SW1
SW2

IRT-6630-DTR
I.R.T. Communications Pty L t d | www .irtcommunications. c o m
Page 9 of 22 Revision 01
INSTALLATION
Pre-installati n:
Handling:
This equipment may contain or be connected to static sensitive devices and proper static free handling precautions
should be observed.
Where individual circuit cards are stored, they should be placed in antistatic bags. Proper antistatic procedures
should be followed when inserting or removing cards from these bags.
Installati n in penGear® frame:
See details in separate manual downloadable from the openGear® website (www.opengear.tv).
Signal C nnecti ns:
The default setting of the IRT-6630-DTR is to automatically operate at either 2.97 Gb/s 3G-SDI, 1.485 Gb/s HD-SDI or
270 Mb/s SD-SDI / ASI signals and does not require any adjustment prior to use, with the exception of DIP switch
options described in the Configuration section of this manual that also allow SD only, HD SD only or reclocker
bypass modes of operation. Note that in order for DIP switch settings to have any effect, SIP switch SW1-7 must be
in the OFF position, else all configuration settings are made via DashBoard™ or SNMP software control.
The transmitter and receiver sections of the IRT-6630-DTR act independently from each other in that the signal
rates are both independently set.
The serial digital signal connections are made to the BNC connectors on the rear panel. IN 1 is the primary input to
the transmitter section of the IRT-6630-DTR. With DIP switch SW1-6 OFF, IN 2 becomes the secondary input and
will switch in automatically on loss of a valid input to IN1. Upon restoration of a valid signal to the IN 1 port, the
optical transmitter automatically restores back to the signal on the IN 1 port. With SW1-6 ON, automatic
changeover is disabled and IN 2 is ignored.
With DIP switch SW1-8 OFF, the OUT 1 BNC connector acts as an optical receiver section output. OUT 2 is always
an output of the optical receiver section.
With DIP switch SW1-8 ON, the OUT 1 BNC connector acts as a monitor port for the transmitter section. It will
monitor either the IN 1 or IN 2 input depending on which input is actually feeding the optical transmitter.
Fibre Optic C nnecti n:
Optical connections are made to the panel adapter mounted on a bracket at the rear of the module. Care must be
taken to provide a clean surface on the optical connectors and in inserting the plug on the external fibre to prevent
damage to the alignment ferrule of the panel adapter. Type of fibre used must be single mode type.
The standard configuration for the IRT-6630-DTR has separate LC PC optical connectors for the transmitter and
receiver sections. The transmitter optical output connector is the upper half of the optical connector, whilst the
receiver optical input connector is the lower half.
If the IRT-6630-DTR is fitted with the optional 1300 1550nm wave division multiplexer (WDM), only one common
optical SC PC connector is provided with both transmit and receive functions occurring on a single fibre. When
operating the IRT-6630-DTR as a pair with the WDM option fitted, one unit must be fitted with a 1310nm (or 1260-
1360nm) optical transceiver and the other with a 1550nm (or 1520-1600nm) optical transceiver.
Note that for path lengths ≤ 9 dB for APD detectors, or ≤ 3 dB for PIN detectors, an optical attenuator must be
used to avoid over driving the receiver part of the transceiver. For the standard IRT-6630-DTR with no WDM option
fitted, an external optical attenuator is supplied as standard with the unit. For IRT-6630-DTR’s fitted with a WDM
device, only the 1550nm version comes equipped with an external optical attenuator as it shares the same fibre
together with the 1310nm version.

IRT-6630-DTR
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Page 10 of 22 Revision 01
Fr nt Edge LED and Switch L cati ns
SW_boot switch: Default Reset Switch.
User set names and switch position are stored within
memory so that in the event of a loss of power this
information is restored on resumption of power.
If the default Reset Switch is pressed whilst powering
or inserting the card, the card will default to factory
preset settings.
Tx Laser
(Present – Green; Failure – Red)
Rx
Input
(Present – Green; Failure – Red)
Tx SD rate I P
Rx SD rate O P
Tx HD rate I P
Rx HD rate O P
Tx 3G rate I P
Rx 3G rate O P
IRT-6630-DTR
Front Edge LED Indicators
Green Red LED: GREEN – Communication with frame’s Network card.
RED
-
No communication with Network card No Network card.

IRT-6630-DTR
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Page 11 of 22 Revision 01
Rear Assembly Lay uts
The OUT 1 BNC connector of the IRT-6630-DTR is used either as a receiver (Rx) output or a transmitter (Tx)
monitoring port - dependent upon the SW1-8 DIP switch setting as described in the Configuration section of this
manual.
NOTE: 7 Beware that when in DashBoard™ or SNMP modes it is possible for an operator to easily switch
between states for monitoring what is both being transmitted and received, therefore OUT 2
should be used as the dedicated receiver output when the module has been set up for
DashBoard™ SNMP control (DIP switch SW1-7 = ON) .
IRT-6630-DDT
Rear Assembly
(Standard)
Optical I O
Optical O P
Optical I P
Tx I P (Main)
Tx2 I P (Standby)
Rx O P or Tx Monitor
7
Rx O P
IRT-6630-DDR
Rear Assembly
with WDM option
Tx I P (Main)
Tx2 I P (Standby)
Rx O P or Tx Monitor
7
Rx
O P

IRT-6630-DTR
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Page 12 of 22 Revision 01
OPERATION
The IRT-6630-DTR is primarily designed for use as an optical transmitter and receiver unit built into the one card,
though it can be operated independently as an optical transmitter or optical receiver only device. The IRT-6630-DTR is
fully operable with previous IRT single channel 3G, HD or SD fibre links.
A dual LC PC style of connector on the rear of the card provides separate optical transmit and optical receive fibre
connections with the upper half of the connector being the optical transmitter output and the lower half being the
optical receiver input.
Optionally a 1300 1550nm wave division multiplexer (WDM) can be fitted to the IRT-6630-DTR to allow
simultaneous transmit and receive functions on the one fibre. Only one SC PC optical connector is supplied as
standard when fitted with the WDM option. When fitted with the WDM option, due to the 1300 1550nm split of
the WDM device, and being used as a pair, one IRT-6630-DTR must be fitted with a 1310nm (or 1260-1360nm)
transceiver and the other with a 1550nm (or 1520-1600nm) transceiver.
The default setting of the IRT-6630-DTR is automatically set to operate at either 2.97 Gb/s 3G-SDI, 1.485 Gb/s HD-SDI
or 270 Mb/s SD-SDI (or ASI) and does not require any adjustments prior to use. However, either DIP switch or
DashBoard™ or SNMP settings allow the unit to be set for SD only, SD HD only or reclocker bypass modes.
A 2.97 Gb s 3G-SDI signal, 1.485 Gb s HD-SDI signal or a 270 Mb s type of signal, such as ASI or SDI, is connected to
a 75 Ω BNC connector (IN 1) on the rear assembly of the IRT-6630-DTR fibre optic transceiver. Front edge LEDs
indicates the presence and data rate of a valid input signal.
A second input (IN 2) can be automatically switched to the optical output (if enabled) on loss of a valid input signal
to IN 1. On resumption of a valid signal to IN 1 the transmitter section automatically switches back to the IN 1
input.
If the laser is set for permanent operation, on loss of an input signal, a 54MHz oscillator is switched into the optical
output so that the optical receiver still recognizes the optical link as being valid. This 54MHz signal does not affect
the signal reclocking detector circuitry of the receiver section, which is used in signal presence on detection or
absence of a valid 3G, HD or SD signal.
Single mode optical cable is directly connected to the module at the rear of the unit.
The system will operate with an optical path loss from 9dB to a maximum of 27dB (for 3G-SDI signals, typically
>30dB for HD SD-SDI signals) when fitted with an APD detector, and from 3dB to a maximum of 18dB when fitted
with a PIN detector. A flashing green LED indicator on the front edge indicates when the optical path loss is
approaching, or has exceeded, the maximum allowed. On loss of input the optical LED illuminates red. For path
lengths <9dB optical loss when using an APD detector, or <3dB optical loss when using a PIN detector, an optical
attenuator is required. The length of fibre that this corresponds to depends on the fibre loss characteristics at the
relevant wavelength of the laser module chosen. For example, if the fibre loss characteristic of the chosen fibre is
0.2dB per kilometre at 1550 nm, say, then the maximum distance that can be run is 135 km (27dB 0.2dBkm),
although connector losses, such as through patch lead connectors etc., should also be taken into consideration
when calculating maximum distances. Actual attenuation versus wavelength characteristics depends upon optic
fibre manufacturer’s own specifications. Also a few dB headroom is recommended to allow for the effects of laser
aging over time.
The output of the IRT-6630-DTR receiver section is the same signal that was originally inputted to the opposite
fibre transmitter. Front edge green LEDs indicate the presence of a valid locked 3G-SDI, HD-SDI, or an SD-SDI type
of output signal.
In the reclocker bypass mode, rates other than the 3G HD SD-SDI rates can be sent and received. If the data rate
does not match that of 3G-SDI, HD-SDI or SD-SDI all front edge signal data rate LED’s will flash to indicate that an
unknown data rate has been detected.

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Page 13 of 22 Revision 01
Fr nt Edge LED Indicat rs:
If the Tx or Rx input signal rate does not match the set rate, or the secondary input rate is
not the same as the primary input rate, even though its rate is compatible with the set rate,
the corresponding LED will flash.
In this example the IRT-6630-DTR transmitter section has been set for either HD SD only or
3G HD SD operation. The primary input (IN 1) is being fed with an HD source. The
secondary input (IN 2), even though its rate (SD) is within the Tx set rate, will flash as its rate
is different to the primary input’s rate. On loss of primary input the secondary will still take
control and stop flashing as its rate is still within the set Tx rate.
If both primary and secondary inputs were HD-SDI and 3G-SDI signals, for example, and the
Tx data rate was set for SD only operation, then both the HD and 3G LEDs will alternatively
flash.
Laser failure on the IRT-6630-DTR is indicated by a red illuminated LASER LED at the top of
the board. In the above example there is no laser failure as indicated by the green
illuminated LASER LED.
Optical present, optical low, and optical input failure, on the IRT-6630-DTR is indicated by a
bi-colour illuminated OPTICAL LED. In this example the OPTICAL LED is flashing and is
illuminated green, but so is the received HD signal LED illuminated green. This indicates that
an HD signal is being received even though the OPTICAL alarm LED is illuminated and
flashing, thus the OPTICAL alarm LED is indicating that the optical signal level is low, or
approaching the minimum signal strength allowed before signal failure takes place, whence
the receiver output will be muted. Note however that it is still possible for the optical signal
strength to be low and still allow an errored data signal to be received before signal muting
takes place. The optical low trigger point can vary between the plug-in receivers, so if
operating at signal paths close to the recommended maximum specified threshold, signal
analysis should be performed to check the accuracy of the received signal if the OPTICAL
LED is flashing green.
950 1240 1380
800 1000 1200 1400 1600
Wavelength (nm)
10
1
0.1
Attenuation (dB/km)
IR absorption
Rayleigh scattering
1/λ
4
Figure 1: Attenuati n versus wavelength.
Attenuation in the fibre is due to Absorption and Scattering.
IRT-6630-DTR
Tx
Rx
SD IN (2)
HD IN (1)
HD OUT

IRT-6630-DTR
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Page 14 of 22 Revision 01
DashB ard™ SOFTWARE CONTROL
The DashBoard™ Control and Monitoring System is a free application designed for remote control and monitoring
of the openGear® platform. This is a free application downloadable from the openGear® website
(www.opengear.tv). As such, configuration of the DashBoard™ program will not be described here. The
DashBoard™ manual is also downloadable from the openGear® website.
IRT-6630-DTR DashB ard™ Screensh ts:
Basic Tree View:
On the left the basic tree view shows the frame. With the tree structure
expanded a list of cards within the frame is shown. In this example, slot
position 4 is highlighted. All sections and tabs to the right of the basic tree view
now relate to the card in slot position 4, in this case the IRT-6630-DTR
transceiver. The name of the switcher, in this case IRT-6630-DTR, can be set
under the Configuration TAB setting.
Pr duct TAB:
Self explanatory. Note that the Product Alias field can be set under the Configuration TAB setting.

IRT-6630-DTR
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Page 15 of 22 Revision 01
Status TAB:
Status TAB shows the Optical Status & Optical Component of both the transmitter’s laser (Optical 1) and the
receiver’s detector (Optical 2).
The signal status of both the transmitter and receiver are also shown. The Alias (name) of the transmitter inputs
(Channel Tx & Channel Tx2) and the receiver output (Channel Rx) are set under the Configuration TAB. The Channel
Status indicates if a signal is present as well as the type of signal.

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Page 16 of 22 Revision 01
C nfig TAB:
Under the Configuration TAB parameters such as Product Alias (name) and channel names (Channel Tx, Channel Rx
& Channel Tx2) can be user set. Click computer mouse into the field to change and type new name.
If DIP switch SW1-7 has been set for DashBoard™ control, parameters such as the transmitter and receiver data
rates can be set as well as Auto Change Over mode to automatically switch to input 2 on loss of input 1, and
whether the OUT 1 output acts as a monitor port for the transmitter or a second receiver output.
Beware that because when in DashBoard™ mode it is possible for the operator to easily switch between states for
monitoring the OUT 1 BNC port of what is both being transmitted and received, OUT 2 should be used as the
dedicated receiver output.
Under DashBoard™ control it is also possible to lock the control mode to DashBoard™ control. Even if the board is
subsequently switch to operate in the PCB mode, these settings will not have any effect until the control mode has
been release from the LockToDashBoard mode.
When in the PCB mode of operation, the Config TAB control functions are disabled, with the exception of the Alias
and Trap settings. All configuration parameters are then as per the DIP switch settings.

IRT-6630-DTR
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Page 17 of 22 Revision 01
SNMP SOFTWARE CONTROL
Control via SNMP is possible via a third party Network Management System (NMS) provided the openGear® frame
is fitted with a relevant Network Management card. In the case of the OG3-FR frame the MFC-8322-NS network
management card is required for SNMP control. In the case of either the DFR-8310 or DFR-8321 frames either the
MFC-8310-NS or MFC-8320-NS cards are required for SNMP control. Relevant frame MIBs and card MIB required to
interface to NMS software - see I.R.T. Communications website (www.irtcommunications.com) for MIB download.
The MIB file for the IRT-6630-DTR is a common MIB file for the family of IRT-6630 fibre links and is named
IRT-663x-Dxx. Not all parameters in the MIB file relate to this card.
IRT-6630-DTR SNMP Functi ns:
The following SNMP functions are capable of being controlled and monitored by an NMS:
irt663xDxxPr ductTable: A table containing product info for all IRT-6630-DTR cards at this node.
pr ductAlias - An indication and control of the Alias (Name) of this card.
b ardRev - An indication of the hardware (board) revision of this card.
s ftwareRev - An indication of the software revision of this card.
irt663xDxxStatusTable: A table containing alarm status for all IRT-6630-DTR cards at this node.
rearassembly - An indication whether the card is inserted into the correct rear assembly or not:
(1) match: Card is inserted into correct rear assembly.
(2) mismatch: Card is inserted into incorrect rear assembly.
i Alarm - An indication of the alarm status of this card:
(0) noAlarm: No alarms present.
(1) urgent-1-OpticalFail: Transmitter laser has failed.
(2) urgent-2-OpticalFail: Optical input to the receiver’s detector is below its
minimum threshold or has failed.
(3) urgent-1-2-OpticalFail: Both transmitter laser has failed and optical input to the
receiver’s detector is below its minimum threshold or has failed.
(4) nonUrg-ValidSignalAbsent: Either no valid signal is present on the input to the
transmitter or received by the receiver.
(5) urgent-1-OpticalFail-nonUrg-ValidSignalAbsent: Transmitter laser has failed and
no valid signal has been received by the receiver.
(6) urgent-2-OpticalFail-nonUrg-ValidSignalAbsent: Optical input to the receiver’s
detector is below its minimum threshold, or has failed, and no valid signal is
present on the input to the transmitter.
(7) urgent-1-2-OpticalFail-nonUrg-ValidSignalAbsent: Both transmitter laser has
failed and optical input to the receiver’s detector is below its minimum threshold
or has failed and no valid signal is present on the input to the transmitter.
(8) non-Urg-OpticalLow: Optical detector of receiver is reporting that the optical
input signal is approaching its minimum, or has exceeded its, allowable signal
strength. NOTE: Detectors can vary in their reporting of optical low state. It is
recommended to confirm that the received signal is error free if an Optical Low
alarm has been raised.
(9) urgent-1-OpticalFail-nonUrg-OpticalLow: Laser has failed and optical detector of
receiver is reporting that the optical input signal is approaching its minimum, or
has exceeded its, allowable signal strength. NOTE: Detectors can vary in their
reporting of optical low state. It is recommended to confirm that the received
signal is error free if an Optical Low alarm has been raised.
(10) urgent-2-OpticalFail-nonUrg-OpticalLow: Not applicable to the I T-6630-DT .
(11) urgent-1-2-OpticalFail: Optical input to the receiver’s detector is below its
minimum threshold or has failed. Duplicate entry for table structure only.

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(12) nonUrg-ValidSignalAbsent-OpticalLow: Either no valid signal is present on the
input to the transmitter or received by the receiver and optical detector of
receiver is reporting that the optical input signal is approaching its minimum, or
has exceeded its, allowable signal strength. NOTE: Detectors can vary in their
reporting of optical low state. It is recommended to confirm that the received
signal is error free if an Optical Low alarm has been raised.
(13) urgent-1-OpticalFail-nonUrg-validSignalAbsent-opticalLow: Transmitter laser has
failed and no valid signal has been received by the receiver and optical detector
of receiver is reporting that the optical input signal is approaching its minimum,
or has exceeded its, allowable signal strength. NOTE: Detectors can vary in their
reporting of optical low state. It is recommended to confirm that the received
signal is error free if an Optical Low alarm has been raised.
(14) urgent-2-OpticalFail-nonUrg-validSignalAbsent-opticalLow: Not applicable to the
I T-6630-DT .
(15) urgent-1-2-OpticalFail-nonUrg-ValidSignalAbsent: Both transmitter laser has
failed and optical input to the receiver’s detector is below its minimum threshold
or has failed and no valid signal is present on the input to the transmitter.
Duplicate entry for table structure only.
irt663xDxxSettingsTable: A table containing configuration settings for all IRT-6630-DTR cards at this node.
c ntr lM de - An indication of the control settings made as per the PCB DIP switch setting:
(0) dashboardSNMP: Card settings can be controlled via DashBoard™ or SNMP.
(1) pcbSwitches: Card settings as per DIP switch settings only.
(2) lockedtoDashboardSNMP: Lock module to DashBoard™ or SNMP control –
overrides SW1-7 position. Note that SW1-7 must be initially ON to be able to set
to Lock to SNMP mode. To release send either a (0) or (1).
i AlarmTrapEnable - An indication and control of Trap enable disable function of input output alarms:
(0) ioAlarmTrapDisable: Disable input output alarm Traps.
(1) ioAlarmTrapEnable: Enable input output alarm Traps.
reset - Unit reset control:
(0) normal: when queried reset control returns a ‘normal’ state.
(1) reset: system reset causes a reset of the card.
aut ChangeOver - Enable or Disable Automatic Changeover to switch Tx optical output from primary (IN 1)
to secondary (IN 2) input on loss of valid primary input (if secondary input is both
present and valid):
(1) disable: Automatic Changeover mode disabled.
(2) enable: Automatic Changeover mode enabled.
m nit rP rt - Sets the signal source for BNC OUT 1:
(0) receiverInput: OUT 1 port outputs the received signal.
(1) transmitterOutput: OUT 1 port outputs the transmitted signal.
(2) transmitterOutput: Not applicable to I T-6630-DT . Defaults back to
receiverInput (0).
(3) cableInputs: Not applicable to I T-6630-DT . Defaults back to transmitterOutput (1).
keepAliveTx1 - A substitution of a 54 MHz signal in place of no input signal to keep the optical link active
at the receiver end:
(1) enable: Keep Alive signal enabled.
(2) disable: Keep Alive signal disabled.
keepAliveTx2 - Not applicable to the I T-6630-DT .
ptical1TrapEnable - An indication and control of Trap enable disable function of the transmitter laser state:
(0) disable: Disable laser Trap alarms.
(1) enable: Enable laser Trap alarms.
ptical2TrapEnable - An indication and control of Trap enable disable function of the receiver input state:
(0) disable: Disable receiver Trap alarms.
(1) enable: Enable receiver Trap alarms.

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pticalSettingsTable: A table containing information about the optical components fitted to the card.
ptical1C mp nent - Wavelength information about the transmitter section:
(1) nm1470Laser: IRT-6630-DTR fitted with a 1470nm wavelength laser.
(2) nm1490Laser: IRT-6630-DTR fitted with a 1490nm wavelength laser.
(3) nm1510Laser: IRT-6630-DTR fitted with a 1510nm wavelength laser.
(4) nm1530Laser: IRT-6630-DTR fitted with a 1530nm wavelength laser.
(5) nm1550Laser: IRT-6630-DTR fitted with a 1550nm wavelength laser.
(6) nm1570Laser: IRT-6630-DTR fitted with a 1570nm wavelength laser.
(7) nm1590Laser: IRT-6630-DTR fitted with a 1590nm wavelength laser.
(8) nm1610Laser: IRT-6630-DTR fitted with a 1610nm wavelength laser.
(9) nm1310Laser: IRT-6630-DTR fitted with a 1310nm wavelength laser.
(10) unknown: IRT-6630-DTR fitted with a wavelength laser not matching any of the
above.
(11) pinDetector: Not applicable to the I T-6630-DT .
(12) apdDetector: Not applicable to the I T-6630-DT .
(13) na: Not applicable to the I T-6630-DT .
ptical1Status - An indication of the status of the transmitter output:
GOOD
FAIL.
ptical2C mp nent - Detector type information about the receiver section:
(1) nm1470Laser: Not applicable to the I T-6630-DT .
(2) nm1490Laser: Not applicable to the I T-6630-DT .
(3) nm1510Laser: Not applicable to the I T-6630-DT .
(4) nm1530Laser: Not applicable to the I T-6630-DT .
(5) nm1550Laser: Not applicable to the I T-6630-DT .
(6) nm1570Laser: Not applicable to the I T-6630-DT .
(7) nm1590Laser: Not applicable to the I T-6630-DT .
(8) nm1610Laser: Not applicable to the I T-6630-DT .
(9) nm1310Laser: Not applicable to the I T-6630-DT .
(10) unknown: Not applicable to the I T-6630-DT .
(11) pinDetector: IRT-6630-DTR fitted with a PIN receiver.
(12) apdDetector: IRT-6630-DTR fitted with an APD receiver.
(13) na: Not applicable to the I T-6630-DT .
ptical2Status - An indication of the status of the receiver input:
GOOD
LOW
FAIL
inputPresentTable: A table containing information about the input status and settings.
channel1Present - Not applicable to the I T-6630-DT .
channel2Present - Not applicable to the I T-6630-DT .
channelTxPresent - An indication of the status of the signal connected to the IN 1 input:
sdi3G PRESENT
sdiHD PRESENT
sdiSD ASI PRESENT
UNKNOWN PRESENT
NOT PRESENT
channelRxPresent - An indication of the status of the signal received by the receiver:
sdi3G PRESENT
sdiHD PRESENT
sdiSD ASI PRESENT
UNKNOWN PRESENT
NOT PRESENT

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channelTx2Present - An indication of the status of the signal connected to the IN 2 input:
sdi3G PRESENT
sdiHD PRESENT
sdiSD ASI PRESENT
UNKNOWN PRESENT
NOT PRESENT
channelEnableTable: A table containing information about the channel state settings.
channel1Enable - Not applicable to the I T-6630-DT .
channel2Enable - Not applicable to the I T-6630-DT .
channelTxEnable - An indication and control of the transmitter IN 1 channel:
(1) disabled: Disable the transmitter. Neither IN 1 nor IN 2 will be sent. Writing
either a 2, 3, 4 or 5 will enable the channel.
(2) enabledActive: IN 1 input is enabled and active.
(3) enabledMuted: IN 1 input is active and muted due to either rate not matching
the set rate or no signal is present at the IN 1 port.
(4) enabledChangedOver: IN 1 input is active but transmitter has switched to IN 2
input due to either IN 1 rate not matching the set rate or no signal is present at
the IN 1 port.
(5) na: Not applicable to the I T-6630-DT .
channelRxEnable - An indication and control of the receiver channel:
(1) disabled: Disable the receiver output. Writing either a 2, 3, 4 or 5 will enable the
output.
(2) enabledActive: Receiver output is enabled and active.
(3) enabledMuted: Receiver output is enabled and muted due to either rate not
matching the set rate or no signal is present in the received optical signal.
(4) enabledChangedOver: Not applicable to the I T-6630-DT .
(5) na: Not applicable to the I T-6630-DT .
channelTx2Enable - An indication of the transmitter IN 2 channel:
(1) disabled: Input IN 2 is disabled as per the auto change-over setting also being
disabled.
(2) enabledActive: IN 2 input is enabled and active. An auto change-over operation
has taken place.
(3) enabledMuted: IN 2 input is active and muted due to the auto change-over being
enabled but IN 1 still has control of the transmitter.
(4) enabledChangedOver: Not applicable for the I T-6630-DT .
(5) na: Not applicable to the I T-6630-DT .
channelAliasTable: A table containing information about the channel aliases.
channel1Alias - Not applicable to the I T-6630-DT .
channel2Alias - Not applicable to the I T-6630-DT .
channelTxAlias - Set and read the Alias (name) for the transmitter signal IN 1.
channelRxAlias - Set and read the Alias (name) for the received signal.
channelTx2Alias - Set and read the Alias (name) for the secondary transmitter signal IN 2.