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SDI, 2 AES Audio, Bi-Directional RS-232/422, 2 GPI & 2 GPO, Fiber Transmitter

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The 7707MT Multi-Signal Fiber Transmitter is a VistaLINK® capable, fiber transmitter for SDI Video, AES Audio, RS-422 control and GPI/O. This single card module transports one uni-directional SDI Video, two uni-directional AES Audio, one bi-directional RS-422 and two bi-directional GPI's and GPO's. These signals are combined using Time Domain Multiplex (TDM) technology and transmitted over a single fiber. The companion 7707MR Multi-Signal Fiber Receiver demultiplexes the signals and converts them back to their original formats. The 7707MT and companion 7707MR will transparently pass incoming SDI video feeds with embedded AES audio or any other data in the horizontal or vertical ancillary data space. Minimal Audio to Video latency over the transport interface is also achieved.

The fiber output is available in an assortment of optical wavelengths, accommodating 1310/1550nm, CWDM and DWDM transmission schemes.

The 7707MT occupies one card slot and can be housed in the 1RU 7801FR frame which holds up to four single or two dual slot modules, the 3RU 7800FR frame which has a 15 slot capacity, the portable 3RU 350FR frame which has a 7 slot capacity, or a standalone enclosure which holds a single module.


  • SDI video, 2 AES audio, 1 bi-directional RS-232/422 and 2 GPI/O fiber optic transmitter
  • Supports 525 or 625 line 4:2:2 component SDI signals
  • Supports SDTi signals
  • Supports 32, 44.1, 48 KHz AES audio inputs
  • Dolby E compatible
  • Supports bi-directional RS-422 signals at baud rates up to 3Mb/s
  • AES audio inputs can be synchronous or asynchronous to each other and/or to input video
  • Reclocked SDI output for additional signal distribution
  • Signal transport over fiber uninterrupted by loss of input SDI, AES, Serial Data or GPI/O feeds
  • Low Audio to Video latency over transport interface
  • Comprehensive signal and card status monitoring via four-digit card-edge display, or remotely through SNMP and VistaLINK® capability
  • Local display of optical signal strength, video, audio, and data presence, video and AES formats, EDH errors, GPI and GPO status
  • Automatic coaxial input equalization to 300m at 270Mb/s (Belden 1694)
  • Fully Hot-swappable from front of frame with no fiber disconnect/reconnect required
  • Bi-directional optical input/output
  • Accepts any wavelength in the 1270nm to 1610nm range
  • Optical output wavelengths of 1310nm, 1550nm, and up to sixteen CWDM wavelengths (ITU-T G.694.2 compliant)
  • DWDM wavelengths (ITU-T G.694.1 compliant) also available
  • Supports single-mode and multi-mode fiber optic cable
  • VistaLINK® capable for remote monitoring via SNMP (using VistaLINK® PRO) when installed in 7800FR frame with a 7800FC VistaLINK® Frame Controller

7707MT Application Configurations

Fiber TypeFibersOptical Link BudgetTransmit SideReceive SideDescription
Ordering InformationTx PowerOrdering InformationRx Sensitivity

** : assumes 8Ch CWDM Mux/Demux loss of 3.5dB
*** : assumes 8Ch DWDM Mux/Demux loss of 5dB

~Tx Power/Rx Sensitivity are nominal values ±1dBm
~Fiber loss = 0.35/0.25dB per km @ 1310nm/1550nm

Multi-mode2< 3km7707MT13-F2-7dBm7707MR13-F2-28dBm1310nm on Tx & Rx fibers
Single-mode221dB / 60km7707MT13-F2-7dBm7707MR13-F2-28dBm1310nm on Tx & Rx fibers
Single-mode1 (WDM)25dB / 71km7707MT15-W-1dBm7707MR13M-W-26dBm1310nm/1550nm WDM bi-directional, one fiber
Single-mode1 (CWDM)24dB / 96km**7707MTxx-F20dBm7707MRxx-F2-28dBmDifferent CWDM wavelengths for Tx & Rx, with 8 channel CWDM Mux/Demux**
Single-mode1 (DWDM)30dB / 120km***7707MTDxxx-F2+7dBm7707MRDxxx-F2-28dBmDifferent DWDM wavelengths for Tx & Rx, with 8 channel DWDM Mux/Demux***


Serial Video Input
Standard SMPTE ST 259-C, SMPTE ST 305
Number of Inputs 1
Connector BNC per IEC 61169-8 Annex A
Equalization Automatic to 300m @ 270Mb/s with Belden 1694 or equivalent cable
Return Loss > 15dB up to 270Mb/s
Serial Video Output
Single Fiber Version Only
Number of Outputs 1 reclocked
Connector BNC per IEC 61169-8 Annex A
Signal Level 800mV nominal
DC Offset 0V ±0.5V
Rise/Fall Time 900ps nominal
Overshoot < 10% of amplitude
Return Loss > 15dB up to 270Mb/s
Wideband Jitter < 0.2UI
AES Audio Input
Standard Jumper selected
Balanced AES3-1992
Unbalanced SMPTE ST 276
Other Dolby E compatible
Number of Inputs 2
Connector 4 pins on female high density DB-15
Signal Level
Balanced 2V to 7V p-p with level jumper set to HI
1V to 2V p-p with level jumper set to LO
Unbalanced 1V p-p ±0.1V
Equalization 500m @ 48kHz with Belden 1800B or equivalent
Resolution Up to 24 bits
Sampling Rate 32, 44.1, 48kHz
Intrinsic Jitter < 20ns
Balanced 110Ω
Unbalanced 75Ω
General Purpose Inputs
Type Opto-isolated, active low with internal pullups to +5V or +12V (jumper selectable)
Number of Inputs 2
Connector 2 pins (plus ground) on female high density DB-15
Signal Drive Level Open or closure to ground
General Purpose Outputs
Type "Dry Contact" relay closure
Number of Outputs 2
Connector 2 pins per output on female high density DB-15
Signal Level Normally closed or normally open (jumper selectable)
Serial Data Input/Output
Type RS-422 or RS-232 - jumper selectable
Number of Ports 1 (RS-422) or 2 (RS-232)
Connector 4 pins (plus ground) on female high density DB-15
Baud Rate Up to 3Mb/s for RS-422 (Determined by incoming data)
System Performance
7707MT + 7707MR
Video Input to Output Delay < 1.5µs
Audio to Video Delay
Softswitch™ Disabled (7707MR) < 1µs
Softswitch™ Enabled (7707MR) < 2ms
Optical Input / Output
Number of Connections 1 (single fiber version) or 2 (-F2 dual fiber version)
Connector Female SC/PC or FC/PC
Return Loss > 20dB
Rise/Fall Time 200ps nominal
Maximum Input Power 0dBm
Input Wavelength 1270nm to 1610nm
Input Optical Sensitivity
WDM (-w version) -26dBm
Standard -28dBm
Output Jitter < 0.2 UI
Standard 1310nm, 1550nm
CWDM 1270nm -1610nm
DWDM C-Band (ITU-T G.694.1 compliant)
Output Power
1310nm FP -7dBm ±1dBm
1550nm (-W) -1dBm ±1dBm
1550nm, CDWM (DFB) 0dBm ±1dBm
DWDM (DFB) +7dBm ±1dBm
Voltage +12V DC
Power 12 Watts (Non-DWDM) or 14 Watts (DWDM)
Number of Slots 1
Laser Safety Class 1 laser product, complies with 24CFR 1040.10 and 1040.11, IEC 60825-1
EMI/RFI Complies with FCC Part 15, Class A, EU EMC Directive

Ordering Information

SDI, 2 AES Audio, Bi-Directional RS-232/422, GPI/O Fiber Transmitter
7707MT15-W Single Fiber, WDM, 1550nm DFB Tx, Rx on 1310nm
7707MT13-F2 Dual Fiber, 1310nm FP Tx and Rx
CWDM & DWDM (Ordering Information)
7707MTxx-F2 Dual Fiber, CWDM DFB laser
7707MTDxxx-F2 Dual Fiber, DWDM DFB laser (Contact Factory for Wavelength Availability)
Ordering Options
Notes Rear plate and fiber connector must be specified at time of order - eg: [model]+SC+3RU
Connector Suffix
Rear Plate Suffix
+1RU 1RU rear plate for use with 7701FR Multiframe
+SA Standalone Enclosure Rear Plate
+3RU 3RU rear plate for use with 350FR, 7700FR-C or 7800FR Multiframes
350FR Portable Multiframe which holds 7 single slot modules
7700FR-C 3RU Multiframe which holds 15 single slot modules
7800FR 3RU Multiframe which holds 15 single slot modules
7701FR 1RU Multiframe which holds 3 single slot modules
S7701FR 7700 Series Standalone Enclosure
7707MX-BHP-15 Bulkhead Break out Panel for 15 x 7707MT cards (includes 15 3 ft. cables)
7707MX-BHP-15-B Bulkhead Break out Panel for 15 x 7707MT cards (includes 15 3 ft. cables) for balanced audio only
7707MX-BHP-1 Bulkhead Break out Panel for 1 x 7707MT cards (includes 1 3 ft. cable)