680 Series Video Distribution Amplifiers Installation and Operation Manual
35
Chapter 8: Specifications
VEA-683 Video Equalizing Amplifier Modules
Table 8-14.
VDA-683 Power Requirements Specifications
Item
Specification
Power dissipation
< 2 W
Table 8-15.
VEA-683 Input Specifications
Item
Specification
Video input level
1 Vp-p nominal
Maximum input level
2.5 Vp-p centered at 0V
Input impedance
75
Ω
bridging
Coupling
DC
Input return loss
> 40 dB to 20 MHz
Common mode rejection ratio
> 65 dB to 10 kHz
Table 8-16.
VEA-683 Output Specifications
Item
Specification
Number of outputs
8
Output impedance
75
Ω
Output return loss
> 45 dB to 5 MHz
> 40 dB to 10 MHz
Phase match between outputs
< ±0.2° at 3.58 MHz
Output isolation
> 35 dB at 10 MHz
Response variation
< 0.1 dB, 1 to 8 loads at 10 MHz
Table 8-17.
VEA-683 Performance Specifications
Item
Specification
Gain range
–3 dB to + 3 dB
Frequency response
< ±0.05 dB to 10 MHz
+0/-0.2 dB at 20 MHz
> –3dB at 50 MHz typically
Differential gain (10–90% APL)
< 0.15%
Differential phase (10–90% APL)
< 0.15°
Line rate window tilt
< 0.20%
Field rate window tilt
< 0.20%
S/N
> 70 dB by VM700
Hum
< 1 mVp-p
Propagation delay
15 ± 1.0 ns