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680 Series Video Distribution Amplifiers Installation and Operation Manual
Chapter 8: Specifications
VDA-683 Differential Input Video Distribution Amplifier Modules
Table 8-10.
VDA-683 Input Specifications
Item
Specification
Video input level
1 p-p nominal
Maximum input level
2.5 Vp-p
Input impedance
75
Ω
bridging
Input return loss
> 40 dB to 20 MHz
Coupling
DC
Common mode rejection ratio
> 65 dB to 10 kHz
Common mode signal range
28 Vp-p
Table 8-11.
VDA-683 Output Specifications
Item
Specification
Number of outputs
8
Output impedance
75
Ω
Output return loss
> 45 dB to 20 MHz
Output isolation
> 35 dB to 10 MHz
Response variation
< 0.1 dB, 1 to 8 loads at 10 MHz
Table 8-12.
VDA-683 Performance Specifications
Item
Specification
Gain range
-3 dB to + 3 dB
Frequency response
< ±0.05 dB to 10 MHz
+0/-0.5 dB to 40 MHz
-3 dB at 100 MHz typically
Line rate window tilt
< 0.20%
Field rate window tilt
< 0.20%
Differential gain (10–90% APL)
< 0.15%
Differential phase (10–90% APL)
< 0.15°
S/N
>70 dB by VM700A
Hum
1 mVp-p
Propagation delay
11.5 ± 1.0 ns
Table 8-13.
VDA-683 Temperature Specifications
Item
Specification
Performance
41°–104° F (5°–40° C)
Operating
32°–122° F (0°–50° C)
