7700 MultiFrame Manual
7700ADA7-EQ Equalizing Analog Video Distribution Amplifier
Revision
1.2
Page - 1
1. OVERVIEW
The 7700ADA7-EQ Equalizing Analog Distribution Amplifier is a general purpose amplifier for distributing
analog video signals. The 7700ADA7-EQ features one balanced equalized input with seven outputs. The
7700ADA7-EQ amplifier has been designed to distribute a wide range of analog video signals. It can also
distribute other pulses and signals that are less than 2Vp-p.
The 7700ADA7-EQ occupies one card slot and can be housed in the 1RU 7701FR frame which holds up
to three single or dual slot modules, the 3RU 7800FR frame which has a 15 slot capacity, the portable
3RU 350FR frame which has a 7 slot capacity, or a standalone enclosure which holds a single module.
Features:
•
75 Ohm or high impedance input (jumper selectable)
•
High common mode range and common mode rejection ratio (CMMR)
•
Gain control
•
Jumper selectable AC or DC coupling
•
Jumper selectable fast or slow back porch clamp
•
DC level control when clamp is enabled
•
Cable equalizer adjustment range: 0 to 300m of 8281 or 1694A
•
Looping feature with external "T" connector and external termination
•
Consistent input impedance if card power is lost
Balanced
Analog Input
7 Analog
Outputs
Signal Analysis
Cable
EQ
DC Restore
Cable
Length
Sync
Slicer
Impedance
AC/DC
Coupling
75
Ω
Clamp Pulse
Generation
Clamp On/Off
Gain
DC Level
SD
Pr
es
HD
Pr
es
SYNC
LO
W
SYNC
HIG
H
LEV
E
L
HI
G
H
FAULT
Figure 1-1: 7700ADA7-EQ Block Diagram
