GENERAL INFORMATION
The Pure Digital Fiberlink
®
7250 Series is a transmitter/receiver pair
that transmits a single channel of RGBHV video (up to WUXGA) and
two audio channels over two single mode or multimode fibers. It is
available as a free-standing box unit or as a card version for use in the
rackmountable 6000A card cage.
The system’s all digital encoding delivers noise-free transmissions
that retain all of their initial parameters, regardless of fiber optic cable
attenuation. System operation may be easily monitored using integral
indicator LEDs on each unit that continuously signify the presence of
baseband video and audio signals.
Introduction
Technical Specifications
Model Part Number Configuration:
All units operate at
1310 nm wavelength
using single mode or
multimode fibers. ST
connectors are
provided.
2
Video:
Input Impedance ....................... RGB: 75 Ohms; H&V: Hi-Z
Input Level ................................ RGB: 714 mV p-p; H&V: 3 to 5 V p-p
H Sync Frequency Range ......... 15 to 75 kHz
V Sync Frequency Range ......... 30 to 85 Hz
Number of Video Channels ....... 1 RGBHV
RGB Format Supported ............ RGB with separate H and V
External Signal Connectors ...... HD-15F
Unit Type
Part Number
Transmitter Box
7250-B7S
Transmitter Rack Card
7250-C7S
Receiver Box
7251-B7S
Receiver Rack Card
7251-C7S
7
Module which provides an audible tone and activates a set of contacts
for external signaling purposes.
The status of the LEDs are as follows:
TRANSMITTER and RECEIVER:
Power:
ON (GREEN): Indicates that correct power has been
applied.
TRANSMITTER:
Video:
OFF: Indicates no video detected on the input.
BLINKING GREEN: Indicates either H or V sync detected
at the input, but not both.
STEADY GREEN: Indicates both H and V sync detected on
the input.
Audio:
OFF: Indicates no audio detected on the transmitter unit.
BLINKING GREEN: Audio detected on the transmitter unit.
Alarm:
ON (RED): Loss of video (rack card only)
RECEIVER:
Video:
OFF: Indicates no video detected over the fiber and, as a
result, no video present on the output.
BLINKING GREEN: Indicates either H or V sync detected
over the fiber, but not both.
STEADY GREEN: Indicates both H and V sync detected
over fiber and, as a result, video present on the output.
Audio:
OFF: Indicates no audio detected over fiber and, as a result,
no active audio detected by the receiver unit.
BLINKING GREEN: Audio detected over fiber and, as a
result, active audio detected by the receiver unit.
Alarm:
ON (RED): Loss of video or optical signal (rack card only).
