OPTICAL SYSTEMS DESIGN
DOC ID: 10104804.doc
OSD840 OPERATOR MANUAL
PAGE 6
1.4
TECHNICAL SPECIFICATIONS
TABLE 2: TECHNICAL SPECIFICATIONS
SPECIFICATION
PERFORMANCE
Video Input/Output Impedance
75
Ω
composite
Video Input/Output Levels
1Vpp nominal
Video Connectors
BNC
Video Bandwidth
5Hz to 10MHz (
±
1dB)
Signal to Noise Ratio (Weighted)
> 67dB at all receive levels over the unit’s full dynamic range
Video Distortion
<0.5% Differential Phase (DP), <0.5
°
Differential Gain (DG)
Audio Input/Output Impedance
>10k
Ω
/200
Ω
Balanced/Unbalanced
Audio Bandwidth
10Hz - 22kHz ± 1dB
Audio Input & Output Level
0dBu (0.775V
rms
) nominal, balanced or unbalanced
Audio Headroom
20dB balanced, 15dB unbalanced
Audio Signal to Noise Ratio
>100dB (weighted at max level)
Audio Distortion
< 0.02% Total Harmonic Distortion (THD)
Data Interface
TTL, RS232, RS422 and RS485
31kHz Manchester or Biphase possible in either direction
Data Rates
DC to >400kbps on 3 data channels
DC to >100bps on relay channel
Ethernet
IEEE Ethernet standards at 10/100Mbps
Ethernet Connector
RJ45
Audio and Data Connectors
26 Pin female high density D connector, RJ11 for 2-wire intercom
Transmitter Wavelength
850nm (1310nm for OSD840TL or OSD840RL options)
OSD840T Transmitter Coupled
Power
>-15 to -5dBm into multimode fiber
>-15 to -3dBm into singlemode fiber (OSD840TL only)
OSD840R Transmitter Coupled
Power
>-20 to -14dBm into multimode fiber
>-20 to -10dBm into singlemode fiber (OSD840RL only)
OSD840R Receiver Sensitivity
<-29dBm
OSD840R Sensitivity
>-3dBm
OSD840T Receiver Sensitivity
<-37dBm
OSD840T Sensitivity
>-10dBm
Link Distances
>2km multimode for standard 850nm OSD840 link (fiber bandwidth limited)
>3km multimode for optional 1310nm OSD840L link (fiber bandwidth limited)
>30km singlemode for optional 1310nm OSD840L link (fiber loss limited)
Optical Connectors
ST standard, others optional
Dimensions (mm)
104W x 144D x 44H module
50W x 208D x 100H card
Weight
400g (module), 200g (card)
Power Requirements
12V to 24V
DC
@ 300mA
Operating Temperature
-20 to +75
°
C
Relative Humidity
0 to 95% non-condensing
Chassis Current Consumption
0.40 Amp
10284007
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