Knox Video R & T Cat User Manual

Page 8

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1.2.4 LENGTH FROM t-CAT TO r-CAT
The CAT Video Distribution System was designed to operate in 1 of 4 ranges when correctly set
to the actual length range of the cable interconnecting the t-CAT and r-CAT units (double the
distances for nano-skew).

Short

1 to 75 feet

Medium short

76 to 150 feet

Medium long

151 to 300 feet

Long

301 to 450 feet


1.3 DETAIL SPECIFICATIONS
Video Channels:
Levels:

1V p-p

Frequency Response:

DC to 350MHz @ 1v <3dB down at 300MHz

Input Impedance:

75 Ohms

Output Impedance:

75 Ohms

Crosstalk:

less than -70dB@5MHz

Connectors:
75Ohm female BNC
Optional RJ-45 female (CAT 5/6/nano-skew cable)
Maximum DC Input:

+/-0.5V


Audio Channels
Audio General Analog
Nominal level:
Analog unbalanced

0 dbu (775 mV)

Analog balanced

0 dbu (775 mV)

Digital (only unbalanced)

0.5 V

Frequency response:

20 Hz to 20 kHz

THD + Noise:

0.05% @ 1 kHz at nominal level

S/N:

>80 dB, balanced, at maximum output, unweighted

Crosstalk:

<-70 dB @ 1 kHz

Stereo channel separation:

>70 dB @ 1 kHz

CMRR for balanced:

>65 dB @ 20 Hz to 20 kHz

Max Input Level:

+24 dbu

Max Output Level:

+24 dbu

Gain:

0db (unity)

Input Impedance:
Balanced

600 Ohms

Unbalanced

4.7K Ohms

Digital switchable 75 Ohms or Hi-Z
Output Impedance:
Balanced

600 Ohms

Unbalanced

100 Ohms

Digital

75 Ohms

Connectors:
Balanced WECO 931-HSL/930-HFL
Unbalanced RCA
Digital RCA
S/PDIF Throughput:

44.1 & 48 ksps stereo (~6Mbaud)

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