The 7708LRA/7708LR-H are VistaLINK® capable fiber optic receivers for extended L-Band and other signals. They accept a fiber optic input from a companion transmitter and provide an electrical output signal. Monitoring and control of card status is provided locally at the card edge and remotely via VistaLINK®. SmartMON™ capability allows inband monitoring data sent by a companion SmartMON™ enabled transmitter to be displayed locally or via SNMP/VistaLINK®.

The 7708LRA/7708LR-H 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.

Features

  • Protocol transparent - receives all video, audio and data modulation formats
  • Supports manual, automatic (AGC), and intelligent (IGC) gain control modes
  • IGC mode provides simple automatic compensation for fiber loss while output level tracks input level at SmartMON™ capable fiber transmitter
  • Two buffered RF outputs for extra signal distribution or monitoring functions
  • RF output independent of optical loss (within AGC/IGC gain range)
  • Available with BNC or F-Type connector options
  • Wide range optical input (1270nm to 1610nm)
  • Supports single-mode and multi-mode fiber optic cable
  • Available with SC/UPC, ST/UPC, FC/UPC, SC/APC and FC/APC connector options
  • Wide range adjustable gain in 0.5dB steps for fine tuning signal levels
  • 7708LR-H with high-sensitivity input for long-haul applications
  • Fully hot-swappable from front of frame
  • Comprehensive signal and card status monitoring via four digit card edge display or remotely through SNMP and VistaLINK®
  • VistaLINK® capable for remote monitoring via SNMP (using VistaLINK® PRO) when installed in 7800FR frame with a 7800FC VistaLINK® Frame Controller
  • SmartMON™ capability for display of monitored parameters from companion SmartMON™ capable fiber transmitters

See System Performance Specifications of the chosen companion transmitter for more details

Specifications

RF Outputs

Number of Outputs 2
Connector BNC per IEC 61169-8 Annex A (F-Type optional)
I/O Impedance 75Ω (50Ω optional) (See Ordering Information)
Frequency Range
7708LRA 50MHz-3GHz
7708LR-H 50MHz-2.3GHz
Return Loss
88MHz – 2.3GHz > 15dB
2.3 – 3GHz > 12dB
Output IP3 +28dBm
IMD < -55dBc at -3dBm output and 25dB gain
Output Signal Level
Manual Gain -10 to -65dBm (depending on input signal level, gain setting and optical loss)
AGC Mode -10 to -40dBm (adjustable, maintainable within available gain range)
Available Gain
7708LRA -10 to +31.5dB in 0.5dB steps
7708LR-H -10 to +28dB in 0.5dB steps

See System Performance Specifications of the chosen companion transmitter for more details.

Optical Input

Number of Inputs 1
Connector Female SC/UPC, ST/UPC, FC/UPC, SC/APC, FC/APC
Operating Wavelength 1270-1610nm
Maximum Input Power
7708LRA +3dBm
7708LR-H -7dBm
Optical Sensitivity
7708LRA -14dBm @ 35dB S/N on a 36MHz carrier
7708LR-H -20dBm @ 35dB S/N on a 36MHz carrier

10MHz Performance

7708T13 – 10MHz + 7708R – 10MHz pair
Manual Gain Range -5 to +10dB
Input Power Range +10 to -40dBm
OIP3 +29dB
Harmonic Rejection +60dB

Electrical

Voltage +12V DC
Power 6 watts
EMI/RFI Complies with FCC Part 15, Class A EU EMC directive

Physical

Number of Slots 1

Ordering Information

7708LRA L-Band/Wideband fiber receiver, SmartMON™, VistaLINK®
7708LR‑H High-Sensitivity L-Band fiber receiver, SmartMON™, VistaLINK®
7708R‑10MHz 10MHz fiber receiver, standard sensitivity

Ordering Options

Notes Rear plate and fiber connector must be specified at time of order - eg: [model]+SC+3RU
standard RF connectors are 75Ω BNC
Connector Suffix
+SC SC/UPC
+FC FC/UPC
+AP+SC SC/APC (Angle Polished)
+AP+FC FC/APC (Angle Polished)
+F75 75Ω F-Type
-B50 50Ω BNC connector
-S50 50Ω SMA connector
Rear Plate Suffix
+3RU 3RU rear plate for use with 7800FR or 7801FR Multiframes

Enclosures

7800FR 3RU Multiframe which holds 15 single slot modules
7801FR 1RU Multiframe which holds 4 single slot modules