VEA-1023 Analog Video Auto Equalizing DA
Guide to Installation and Operation
M477-9500-110
October 2016
VEA-1023
Page 1 of 5
VEA-1023
Description
The VEA-1023 is an analog video distribution amplifier with
8 outputs providing differential input, clamping, automatic
equalization and gain adjustments. Equalizing up to 300 m
(1000’) of Belden 8281 cable, the gain and equalization can
be controlled from the frame control panel, the remote
control system (with menu type adjustments) or
automatically (using a test signal at the input). A multi-
colored LED, visible with the door closed, reports the card
status. The differential input provides rejection of hum and
other artifacts on incoming signals. The VEA-1023 is
housed in a Densité frame and a single or double width rear
connector panel is required.
Features
•
Analog video differential input with passive loop-through
•
Eight 75 Ω outputs
•
Signal presence and 525/625 detection and reporting
•
Supports NTSC and PAL video signal formats
•
Handles AES-3id audio signal format
•
50 MHz analog video bandwidth
•
Equalization up to 300m (1000’)
•
Status LED and remote reporting
FUNCTIONAL BLOCK DIAGRAM
Video
Outputs
Video
Input
Microcontroller
1
2
3
4
5
6
7
8
Rem Control
Select
Status
Gain
Loop
Equalization
Signal
Detection
SPECIFICATIONS
INPUT
Video signal: ................................ Any 1 Vpp nominal signal
Return loss: ................................. > 40 dB up to 5 MHz
Coupling: ...................................... DC or AC with Clamping
(Hard/Soft/None)
Level: ........................................... 0.3 to 1.5 Vpp
Impedance: .................................. 75
Ω bridging
Max. Common mode signal: ........ 28 Vpp
Common mode rejection: ............ > 65 dB to 10 kHz
OUTPUTS (8)
Video signal: ............................... 1 Vpp nominal, adjustable
Return loss: ................................. > 50 dB up to 10 MHz
Impedance: ............................. 75
Ω
Phase match between outputs: .... < 0.1
°
@ 4.43 MHz
Output isolation signal:................... > 40 dB @ 10 MHz
Response variation (1-8 loads): < 0.1 dB, 20 MHz
PROCESSING
PERFORMANCE
Gain range:
± 3 dB
Freq. response:
<±0.02dB up to 5MHz,
±0.05dB up to 10MHz
EQ range:
0-300 m Belden 8281,
0-200 m Nokia 0.6/2.8
EQ response:
<±0.05dB up to 5MHz,
±0.15dB up to 10MHz,
Diff. gain:
< 0.15%
Diff. phase:
< 0.15
°
(8 loads),
< 0.1
°
, (2 loads)
Horizontal tilt:
< 0.25%, DC coupling
Vertical tilt:
< 0.25%, DC coupling
Signal to noise ratio:
> 70 dB rms/0.714V, flat 15 MHz
Chroma/luma delay error: < ±1 ns
Chroma/luma gain error: < ±0.02 dB
Hum:
< 1 mV
Processing delay:
15 ns
Power:
single 2 W, dual 2.5
W
