Crestron CNX-PBVR4, Руководство по эксплуатации

Страница: 7 / 16

Crestron CNX-PBVR4 Professional Balanced Video Receiver
Ports, Controls, and Indicators
The CNX-PBVR4 has a single LED power indicator (PWR) on the front panel to
indicate when DC power is applied to the unit; all video signal ports and controls are
located on the rear panel.
NOTE: This unit is a non-Cresnet device.
CNX-PBVR4 Front Panel
As shown in the illustration following this paragraph, the unit’s ports and controls
consist of four identical video I/O groups of input and output connectors and signal
compensation potentiometers. Also located on the rear panel is the male connector
for 24VDC input power from the supplied power pack, PW-2410. The ports and
controls are described in the paragraphs following the illustration.
CNX-PBVR4 Rear Panel
Each of the four video I/O groups consists of an RJ45 (8-pin) connector (labeled A,
B, C, and D), three potentiometers (labeled VIDEO INPUT COMP 1, 2, and 3), and
four gold plated female RCA connectors (labeled VIDEO OUT 1, 2, 3, and 4).
RJ45 Connectors
Each connector receives up to four baseband video input signals via CAT5 cable
from a Room Solution Box, such as the CNXRMCLV, or from a Crestron Video
Distribution Switch, such as the CNX-PVID8x3 or CNX-PVID8x4. Three baseband
signals can be provided by the CNX-PVID8x3 and the CNX-PVID8x4 can provide
four. Component video—including HDTV, S-Video and/or composite video
comprise Level 1 through Level 3 inputs. Level 4 inputs, because they are fed to
fixed compensation circuits, are typically used for composite video or digital audio.
The three to four baseband video signals (1 through 4) correspond to the levels
available on the particular model of CNX-PVID used.
Potentiometers
Three of the video inputs in each group have potentiometers, used to adjust each
signal independently to compensate for line loss due to lengthy CAT5 cable runs.
The fourth input signal has fixed cable compensation. Use a small, flat blade
screwdriver to adjust the pots following the procedures given in "Video Input
Compensation" on page 7.
Operations Guide – DOC. 8184 Professional Balanced Video Receiver: CNX-PBVR4
•
3