Technical details – Grass Valley NV8256-Plus v.1.2 User Manual

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NV8256-Plus Digital Video Router • User’s Guide

71

8. Technical Details

Video Specifications

3Gig (3.0

Gb/s, HD and SD)

inputs and outputs

Type: high definition, serial digital video.
Standard: SMPTE 259M-C, 292M and 424M.
Data rate: auto re-clocking at 270

Mb/s and 1.483, 1.485, 2.966,

2.970

Gb/s or auto bypass.

Data rate: pass-through at 10

Mb/s to 3.0

Gb/s.

Connectors: BNC.
Impedance: 75

Ω.

Cable equalization (for cables listed or equivalent cable):

400

m Belden 1694A,

250

m Belden 1855A

at 270

Mb/s.

150

m Belden 1694A, 100

m Belden 1855A at 1.5

Gb/s.

100

m Belden 1694A, 45

m Belden 1855A at 3.0

Gb/s.

Router path: non-inverting.
Output level: 800

mVpp ± 10%.

Input and Output Return Loss: > 15

dB, 5

MHz to 1.5 GHz; > 10

dB,

1.5 GHz to 3.0

GHz.

Output rise/fall time:

≤ 135

ps.

Output overshoot:

≤ 10% of amplitude max.

Output alignment Jitter:

≤ 0.3

UI pp from 100

kHz to 300

MHz.

Output timing jitter:

≤ 2.0 UI pp from 10

Hz to 100

kHz.

Analog/Digital Video

Conversion

Type: analog to digital video conversion.
Standard: NTSC, PAL analog composite video.
Connectors: BNC.
Impedance: 75

Ω.

Level: 1

Vpp, nominal.

Common mode range: ±2

Vpp.

Frequency response (input): ± 0.5 dB to 5.5

MHz (luminance).

Frequency response (output): ± 0.2

dB to 5.5

MHz (luminance).

Luma/chroma delay: < 12

ns.

Luma/chroma gain inequality: < 0.5

dB.

Differential gain: < 0.3%.
Differential phase: < 0.3 degrees.
Pedestal (input): > 75

dB unweighted.

Pedestal (output): > 75

dB unweighted.

Ramp (input): > 50

dB unweighted.

Ramp (output): > 62.5

dB unweighted.

Specification

Detail

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