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N3531 N3731 Series Digital one video with multi-protocol DIP selectable data
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Infinova’ s N3531 and N3731 series provides the ability to transmit one digitally encoded video channel with bi-directional RS-232 and DIP selectable data (RS-422 / RS-485 / Manchester / Biphase) over one or two fibers.
Modular in design, the N3531 and N3731 series can be rack-mounted or used as stand-alone module. Rack mounting requires the N3910 series subrack chassis. Stand-alone module used the N3910-1S and can be placed on a desktop or mounted to a wall.

Features
  • 10 bits digitally encoded video transmission
  • NTSC, PAL, and SECAM auto compatible
  • Surface mount technology
  • On-panel DIP switch selection of RS-422, RS-485 (2 or 4 wires), Manchester / Biphase
  • On-panel DIP activation of 120 Ohm termination resistor
  • LED indicators for operation status monitoring
  • Surge protection
  • Highest optical dynamic range
  • Immune to EMI and RFI
  • Dense structure for easy installation
  • Hot swappable rack mount cards
  • Automatic re-settable fuses, short circuit protection
  • 12 VDC or 24 VAC power supply
  • Industry standard connectors
  • No user adjustments required
Specifications
Video Performance
Video Channel: 1
Video Input Impedance: 75 Ohm
Video Voltage: 1 V p-p
Bandwidth: 5Hz~6.5 MHz
Differential Gain: 1% (typical)
Differential Phase: 1° (typical)
Signal-to-noise Ratio: 67 dB
PCM Encoding: 10 bits

Data Performance
RS-232 Baud Rate: 115.2 k bps
RS-422/485 Baud Rate (Full Duplex): 115.2 k bps
Half duplex RS-485 Baud Rate: 460 k bps
Bit Error Rate: <10-9

Optical Performance
Fiber Type: multi-mode
Output Power: -15 dBm (typical)
Receiver Sensitivity: -27 dBm (typical)
Wavelength: 1310/1310 nm
Connector: ST
Fiber Type: Single-mode
Output Power: -10 dBm (typical)
Receiver Sensitivity: -30 dBm (typical)
Wavelength: 1310/1550 nm
Connector: FC

LED Indicators
Power On: Red
Optical Link Loss: Red
Video Input/Output Presence: Green
Data Input/Output Presence: Green

Power Supply
N3921-12D-1: 12 VDC (120 VAC), 10 VA
N3921-12D-2: 12 VDC (230 VAC), 10 VA
N3921-24A-1: 24 VAC (120 VAC), 20 VA
N3921-24A-2: 24 VAC (230 VAC), 20 VA

General Parameters
Operating Temperature: -40° F ~ 167° F (-40° C ~ 74° C)
Storage Temperature: -40° F ~185° F (-40° C ~ 85° C)
Operating Humidity: 0 ~ 95% RH (non-condensing)
Card Dimensions (W x H x D): 0.79" x 4.33" x 6.30" (20 mm x 110 mm x 160 mm)
Module Dimensions (W x H x D): 0.91" x 6.18" x 7.32" (23 mm x 157 mm x 186 mm)
Power Consumption: 2.5 W
Card Weight: 0.88 lbs. (400 g)
Module Weight: 1.63 lbs. (740 g)
Mean Time Between Failures: >100,000 Hrs

Compliance
FCC, CE, UL, cUL, ISO 9001:2000

Order Info
N3531TA-1D1B-M FO MM TRX, 1V In, 1D IO +1 RS-232 IO, Module, 12VDC/24VAC
N3531TA-1D1B-R FO MM TRX, 1V In, 1D IO +1 RS-232 IO, Card, 1-Slot
N3531RA-1D1B-M FO MM TRX, 1V Out, 1D IO +1 RS-232 IO, Module, 12VDC/24VAC
N3531RA-1D1B-R FO MM TRX, 1V Out, 1D IO +1 RS-232 IO, Card, 1-Slot

N3731TA-1D1B-M FO SM TRX, 1V In, 1D IO +1 RS-232 IO, Module, 12VDC/24VAC
N3731TA-1D1B-R FO SM TRX, 1V In, 1D IO +1 RS-232 IO, Card, 1-Slot
N3731RA-1D1B-M FO SM TRX, 1V Out, 1D IO +1 RS-232 IO, Module, 12VDC/24VAC
N3731RA-1D1B-R FO SM TRX, 1V Out, 1D IO +1 RS-232 IO, Card, 1-Slot

Fiber Type Optical Budget(dB) Wavelength(nm) Range(km)
Multi-mode 12 1310/1310 4.4
Single-mode 20 1310/1550 25
*Higher output lasers available for range over 25km

Note:
1. Distance is limited to fiber loss, splices, chromatic dispersion and bandwidth
2. Range estimates are based on 1.0dB/km @ 1310nm on MM fiber, 0.35dB/km @1310nm and 
    0.25dB/km @1550nm on SM fiber, and include a 3dB safety factor
3. Range estimates for multimode are based on 500MHz/km fiber




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