Справочник Пользователя для Pelco FR8308
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)
Video Present (per channel)
Receiver
Power
Video Present (per channel)
Carrier Detect
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)
(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
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)
(62.5/125 µm)
1310 nm
20 dB
†
1 km (0.6 mi)
††
<15.6 mW
Single-mode
(9/125 µm)
(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.
connector and splice losses.