Miranda VEA-1002 Manual To Installation And Operation

SERIE DENSITE
VEA-1002
Introduction
The VEA-1002 is an analog video distribution amplifier with 8
outputs, providing equalization and differential input. The
VEA-1002 will equalize up to 300m (1000') of Belden 8281
cable. Gain and equalization can be controlled from the card
edge. A clamping circuit is provided and can be set for hard or
soft clamping. An input video signal status is also available
indicating the input signal presence. The differential input
provides rejection of hum and other artifacts on incoming
signals. The VEA-1002 is housed in a Densité frame and a
'single' or 'double' rear connector panel is required.
Video
Input
Loop

Specifications

INPUT
Video signal: .............................Any 1 Vp-p nominal signal
Return loss: .............................> 45 dB up to 10 MHz
Coupling: .....................DC or AC with Clamping
Level: ..............................0.3 to 1.5 Vp-p
Impedance: .........................75 O ? b ridging
Max. common mode signal :..... 28 Vp-p
Common mode rejection: ........> 65 dB to 10 kHz
OUTPUTS (8)
Video signal: ............................1 Vp-p nominal, adjustable
Return loss: .............................> 45 dB up to 20 MHz
Impedance: ..........................75 O
Phase match between outputs: < 0.1° @ 4.43 MHz
Output isolation signal: .............> 40 dB @ 10 MHz
Response variation:..................< 0.1 dB, 1 to 8 loads, to 20
Signal
Gain
Detection
Select
Microcontroller
Status
VEA-1002 Functional Block Diagram
(Hard/Soft/None)
MHz
Guide to Installation and Operation
Features
•
Differential 75 O looping input with Clamping
•
Eight (8) 75 O outputs
•
Signal presence and 525/625 detection and reporting
•
Supports NTSC and PAL video signal formats
•
50 MHz analog video bandwidth
•
Equalization up to 300m (1000')
•
Status LED (with remote reporting)
•
Control of gain and equalization on the card edge
•
Intra frame output for monitoring
Equalization
Rem Control
PROCESSING PERFORMANCE
Gain range: ........................ ± 3 dB? ?
Freq. response: ..................<±0.05dB up to 10MHz,
............................................-? ? 3 dB @ 50MHz
EQ range:............................0-300 m Belden 8281,
............................................0-200 m Nokia 0.6/2.8
EQ response: ......................<±0.05dB up to 8MHz,
............................................±? ? 0 .1dB up to 10MHz,
............................................-3 dB @ 28 MHz
Differential gain: .................< 0.15%
Differential phase: ..............< 0.15° at 8 loads,
............................................< 0.1° at 2 loads
Horizontal tilt: .....................< 0.25%, DC coupling
Vertical tilt: ..........................< 0.25%, DC coupling
Signal to noise ratio:............> 70 dB up to 15 MHz
............................................(rms noise/0.714 V, unweighted)
Chroma/luma delay error: ...< ±? 1 ns
Chroma/luma gain error: .....< ±? 0 .02 dB
Hum: ...................................< 1 mV
Processing delay :...............15 ns
Power: .................................single 2 W
............................................Double 2.5 W
VEA-1002 - Analog VDA
M454-9500-100
May 2004
1
2
3
4
Video
Outputs
5
6
7
8
To INTRA-FRAME
MONITORING