36
680 Series Video Distribution Amplifiers Installation and Operation Manual
Chapter 8: Specifications
VEA-684 Video Equalizing Amplifier Modules
Table 8-18.
VEA-683 Equalization Specifications
Item
Specification
Range
0–984 ft (0–300 m) Belden 8281 cable
0–656 ft (0–200 m) Belden 8241 cable
0–820 ft (0–250 m) Belden 1505A cable
0–984 ft (0–300 m) Belden 1694A cable
0–656 ft (0–200 m) PSF 1/3 cable
Response
< ±0.05 to 5 MHz
< ±0.15 dB to 10 MHz
Table 8-19.
VEA-683 Temperature Specifications
Item
Specification
Performance
41°–104° F (5°–40° C)
Operating
32°–122° F (0°–50° C)
Table 8-20.
VEA-683 Power Requirements Specifications
Item
Specification
Power dissipation
< 2 W
Table 8-21.
VEA-684 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 and AC jumper selectable
Input return loss
> 40 dB to 20 MHz
Common mode rejection ratio
> 65 dB to 10 kHz
Table 8-22.
VEA-684 Output Specifications
Item
Specification
Number of outputs
8
Level
1 Vp-p nominal
Output impedance
75
Ω
Output return loss
> 45 dB to 5 MHz
> 40 dB to 10 MHz
Output isolation
> 35 dB to 10 MHz
Phase match between outputs
<
±
0.2
°
Response variation
< 0.1 dB, 1 to 8 loads at 10 MHz
