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7707IT-3 & 7707IT-8

Multi-Channel Intercom Fiber Transceivers

Product ManualManual
  • VistaLINK® enabled
Features
  • Extends up to 3 or 8 independent channels of intercom communication over a single fiber optic link
  • Configurable interface to:
    • RTS-Telex Matrix: 4-Wire Audio, RS-485 Data, GPIO
    • ClearCom Matrix: 4-Wire Audio, RS-422 Data, GPIO
    • RTS-Telex Party-Line: 2-Wire Audio, GPIO
    • ClearCom Party-line: 2-Wire Audio, GPIO
  • NOTE: Does not perform conversion between 2-Wire and 4-Wire systems
  • Independent channels can simultaneously accommodate different intercom types
  • User-friendly selection of intercom interfaces via programmed profiles
  • All configurations and adjustments are controllable through the card-edge user interface or remotely via SNMP and VistaLINK®
  • Unique self-calibration of party-line audio null levels
  • Selectable termination, and failsafe bias settings for RS-422/485data inputs
  • Provides 2 general-purpose inputs (GPI's), and 2 general purpose outputs (GPO's)
  • Comprehensive signal and card status monitoring via four-digit card-edge display, or VistaLINK®
  • 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
  • Compatible with single-mode and multi-mode fiber optic cable (dual fiber version)
  • Fully hot swappable from front of frame
  • Occupies two card slots 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.
  • VistaLINK® capable for remote monitoring via SNMP (using VistaLINK® PRO) when installed in 7800FR frame with a 7800FC VistaLINK® Frame Controller
Block DiagramBlock Diagram

Specifications

Analog Audio Input/Output
Balanced/Matrix Type Audio
Number of Signals
7707IT-33 inputs, 3 outputs
7707IT-88 inputs, 8 outputs
TypeAnalog Audio, Balanced
Industry StandardsClearCom, RTS-Telex
ConnectorMulti-pin removable terminal block
Input Impedance> 10kΩ
Output Impedance66Ω
Signal Resolution24 Bit
Sampling Rate52.7kHz
Frequency Response20Hz to 20kHz
Gain Flatness±2dB
Maximum Input Level+20dBu
Maximum Output Level
Into 10kΩ+20dBu
Into 600Ω+19dBu
SNR> 90dB
THD< 0.01%
Crosstalk< -80dB
Controllable Gain-10dB to +10dB
Unbalanced/Party-Line Type Audio
Number of Signals
7707IT-33
7707IT-88
TypeAnalog Audio, Full-duplex, Unbalanced
Industry StandardsClearCom, RTS-Telex
ConnectorMulti-pin removable terminal block
Signal CouplingAC coupled (accommodates 30V "wet" inputs)
Bridging Impedance> 10kΩ
Signal Resolution24 Bit
Sampling Rate52.7kHz
Sidetone Null> 25dB
Sidetone Null Range100Ω to 300Ω load
Frequency Response120Hz to 20kHz
Gain Flatness±2dB
Maximum Input Level+5dBu
Maximum Output Level+5dBu (into 200Ω load)
SNR> 75dB
THD< 0.1%
Crosstalk< -60dB
Controllable Gain-5dB to +5dB (into 200Ω load)
Receive Signaling4V DC min (ClearCom), 20kHz ±500Hz (RTS)
Send Signaling11V DC min (ClearCom), 20kHz ±100Hz (RTS)
RS-422/485 Serial Data
Number of Signals
7707IT-33
7707IT-88
ConnectorMulti-pin removable terminal block
TypeRS-485 or RS-422 (selectable)
Input Termination120Ω or Open (selectable)
Input Failsafe Bias200mV (3.3mA into 60Ω) or None (selectable)
Bit Rate
RS-485Compatible with all Telex RS485 rates
RS-422460kb/s
Optical Input / Output
Number of Connections1 (single fiber version) or 2 (-F2 dual fiber version)
ConnectorFemale SC/PC, ST/PC or FC/PC
Input Wavelength1270nm to 1610nm
Maximum Input Power0dBm
Output Wavelength
Standard1310nm, 1550nm (nominal)
CWDM1270nm to 1610nm (ITU-T G.694.2 compliant)
DWDMC-Band (ITU-T G.694.1 compliant)
Output Power
1310nm FP-7dBm ±1dBm
1310nm (-W version)-1dBm ±1dBm
1550nm, CDWM (DFB)0dBm ±1dBm
DWDM (DFB)+7dBm ±1dBm
Optical Sensitivity
WDM (-W version)-26dBm
Standard-28dBm
General Purpose Inputs
TypeOpto-isolated, Active low
Number of Inputs2
ConnectorMulti-pin removable terminal block
Voltage
Safe Voltage Range-20V to +10V
Off Condition (min)> +3.5V
On Condition (max)< +2.5V (active low)
Current
Minimum1mA
Maximum10mA (internally limited)
General Purpose Outputs
TypeDry contact relay closure, normally open
Number of Outputs2
ConnectorMulti-pin removable terminal block
Minimum Current100mA
Electrical
Voltage+12V DC typical (nominal frame voltage)
Maximum Power
7707IT-37 Watts (Non-DWDM) or 9 Watts (DWDM)
7707IT-818 Watts (Non-DWDM) or 20 Watts (DWDM)
Physical
Number of Slots2
Compliance
Laser SafetyClass 1 laser product, complies with 24CFR 1040.10 and 1040.11, IEC 60825-1
EMI/RFIComplies with FCC Part 15, Class A, EU EMC Directive

Ordering Information

7707IT13M-3-WThree Channel Intercom Fiber Transceiver, Single Fiber, WDM, 1310nm FP Tx, Rx on 1550nm
7707IT15-3-WThree Channel Intercom Fiber Transceiver, Single Fiber, WDM, 1550nm DFB Tx, Rx on 1310nm
7707IT13-3-F2Three Channel Intercom Fiber Transceiver, Dual Fiber, 1310nm FP Tx and Rx
7707IT13M-8-WEight Channel Intercom Fiber Transceiver, Single Fiber, WDM, 1310nm FP Tx, Rx on 1550nm
7707IT15-8-WEight Channel Intercom Fiber Transceiver, Single Fiber, WDM, 1550nm DFB Tx, Rx on 1310nm
7707IT13-8-F2Eight Channel Intercom Fiber Transceiver, Dual Fiber, 1310nm FP Tx and Rx
CWDM (Ordering Information)
7707ITxx-3-F2Three Channel Intercom Fiber Transceiver, Dual Fiber, CWDM DFB laser
7707ITxx-8-F2Eight Channel Intercom Fiber Transceiver, Dual Fiber, CWDM DFB laser
DWDM (Ordering Information)
7707ITDxxx-3-F2Three Channel Intercom Fiber Transceiver, Dual Fiber, DWDM DFB laser
7707ITDxxx-8-F2Eight Channel Intercom Fiber Transceiver, Dual Fiber, DWDM DFB laser
Ordering Options
NotesRear plate and fiber connector must be specified at time of order - eg: [model]+SC+3RU
Connector Suffix
+SCSC/PC
+STST/PC
+FCFC/PC
Rear Plate Suffix
+1RU1RU rear plate for use with 7701FR Multiframe
+SAStandalone Enclosure Rear Plate
+3RU3RU rear plate for use with 350FR, 7700FR-C or 7800FR Multiframes
Enclosures
350FRPortable Multiframe which holds 7 single slot modules
7700FR-C3RU Multiframe which holds 15 single slot modules
7800FR3RU Multiframe which holds 15 single slot modules
7701FR1RU Multiframe which holds 3 single slot modules
S7701FR7700 Series Standalone Enclosure
Patch Cable
CB-FP1M-SCPCSingle mode fiber cable, 1m, SC/PC male termination
CB-FP1M-STPCSingle mode fiber cable, 1m, ST/PC male termination
CB-FP5M-SCPCSingle mode fiber cable, 5m, SC/PC male termination
CB-FP5M-STPCSingle mode fiber cable, 5m, ST/PC male termination
CB-FP10M-SCPCSingle mode fiber cable, 10m, SC/PC male termination
CB-FP10M-STPCSingle mode fiber cable, 10m, ST/PC male termination