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18 C1647M (3/05)
Specifications
VIDEO
Number of Channels 8
Modulation Type Pulse code modulation, 8-bit resolution
Video Input 1.0 Vp-p, 75 ohms; NTSC, PAL, and SECAM
Bandwidth 6.5 MHz
Gain Unity
Crosstalk -50 dB typical at 3.58 MHz
Differential Gain <1%
Differential Phase <1.2°
Tilt <1%
Signal-to-Noise Ratio >60 dB (CCIR weighted)
GENERAL
Operating Temperature -40° to 167°F (-40° to 75°C)
Input Power Requirements 12 VDC or 24 VAC, 460 mA
LED Indicators
Transmitter Power
Video Present (per channel)
Receiver Power
Video Present (per channel)
Carrier Detect
Dimensions 8.75” D x 2.28” W x 4.81” H
(22.23 x 5.79 x 12.22 cm)
Unit Weight 2.56 lb (1.16 kg)
MECHANICAL
Connectors
Video BNC (per channel)
Rack Power/Alarm 4-pin connector
Standalone Power 2-pin connector, screw terminal
Fiber Optic ST for multimode fiber
ST or FC for single-mode fiber
OPTICAL POWER BUDGET, TRANSMISSION DISTANCE, AND LASER CLASS 1 LIMIT
Fiber Wavelength
Optical
Power
Budget
Maximum
Transmission
Distance
Laser
Class 1
Limit*
Multimode
(62.5/125 µm)
1310 nm
20 dB
†
1 km (0.6 mi)
††
<15.6 mW
Single-mode
(9/125 µm)
1310 nm 20 dB
30 km (18.6 mi)
§
<15.6 mW
*The FT8308 transmitter/FR8308 receiver is classified by the FDA as a Class 1 laser product.
†
When using 50/125 µm fiber, subtract 3 dB from the optical power budget.
††
Maximum transmission distance is limited by fiber bandwidth.
§
Maximum transmission distance is based on attenuation of 0.5 dB/km plus a 5 dB buffer for
connector and splice losses.