Knox Video R & T Cat User Manual
Page 8

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)