680 Series Video Distribution Amplifiers Installation and Operation Manual 37
Chapter 8: Specifications
Table 8-23. VEA-684 Performance Specifications
Item Specification
Gain range ± 3.0 dB
Frequency response < ±0.05 dB to10 MHz
< ±0.2 dB to 20 MHz
–3 dB at 40 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 measured by VM700A
Hum < 1 mVp-p
Propagation delay 15 ± 1.0 ns
Table 8-24. VEA-684 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
0–820 ft (0–250 m) Nokia 0.6/2.8 cable
0–820 ft (0–250 m) VPM2000 cable
Response < ±0.05 to 5 MHz
< ±0.15 dB to 10 MHz
Table 8-25. VEA-684 Clamp Specifications
Item Specification
Clamping accuracy < ±25 mV
APL effect < ±5 mV 10–90 APL
Time constant 3 lines and 7 lines selectable by jumper
Table 8-26. VEA-684 Temperature Specifications
Item Specification
Performance 41°–104° F (5°–40° C)
Operating 32°–122° F (0°–50° C)
Table 8-27. VEA-684 Power Requirements Specifications
Item Specification
Power dissipation < 2 W