Knox Video RS4x4HB - Manual (Page 4)

KNOX VIDEO
RS4x4HB ROUTING SWITCHER KNOX VIDEO
RS4x4HB ROUTING SWITCHER
Page 3 Page 4
SECTION 2. INSTALLATION
WARNING!
Static Sensitive Connectors! During the installation process and whenever changing
cables to the Knox RS4x4HB inputs and outputs, use extreme caution to avoid conducting
static electricity to any inputs or outputs including video, audio, and RS232.
DC Offset Warning! Connect standard video and audio inputs and outputs only. Do not
connect input or output signals with a positive or negative dc offset.
Chassis Ground is Earth Ground. Do not connect video or audio cables with induced or
direct-connection potential on the shield.
2.1 INTRODUCTION
This section provides the information required for installation of the RS4x4HB
into its operating environment.
2.2 UNPACKING AND INSPECTION
Unpack the RS4x4HB carefully and verify that the serial number matches the
number quoted on the packing list. Before installing it into a system, check the
outside of the unit carefully for signs of damage and check that none of the fasteners
have come loose.
Check that the power module is also present and marked for use with the
RS4x4HB product.
Units are shipped with a memory backup battery which retains the routing
crosspoint information when power is off. The battery is mounted on the main
printed circuit board visible through the rear cover. In the event that crosspoint
information is not retained during power off, the battery must be replaced. It is
recommended that the battery be replaced after five years.
2.3 INSTALLATION
The RS4x4HB is designed to be mounted in a standard 19" rack panel; it is 3.50
inches, or two standard units, high.
Choose a space in the rack which is convenient for all the cables and mount
the unit using standard rack bolts. Connect the output of the RS4x4HB power unit
to the power connector at the right rear (as viewed from the back of the panel) of the
RS4x4HB and plug the power unit into a grounded AC power outlet of the voltage
and frequency specified on the power unit. There is no power switch on the
RS4x4HB; it is designed to be ON at all times. (If it is desirable to have the RS4x4HB
powered down regularly, connect the power module to a switchable AC power
strip.)
2.4 VIDEO CONNECTIONS
Connect up to four video sources (cameras, videocassette players, RF
demodulators, still-stores, character/graphics generators, etc.) to the input BNC
connectors marked VIDEO INPUT (or RCA connectors, if they were specified).
Inputs are automatically terminated in 75 ohms. Terminate unused outputs in
75 ohms.
Connect up to four destination devices (monitors, VCRs, LCD projectors,
displays, RF modulators, etc.) to the eight BNC (or RCA) connectors marked VIDEO
OUTPUT. Be sure that all destination devices are terminated at 75 ohms.
Do not connect a SOURCE of video to any of the video OUTPUT connectors.
2.5 AUDIO CONNECTIONS
Connect up to four audio sources (line level mikes, videocassette players, RF
demodulators, tape/CD players, etc.) to the left and right channel connectors marked
AUDIO INPUT.
Connect up to four audio destination devices (amplifiers, VCRs, tape/CD
recorders, RF modulators, etc.) to the eight left and right channel connectors
marked AUDIO OUTPUT.
Do not connect a SOURCE of audio to any of the audio OUTPUT connectors.
For balanced audio units, the Phoenix connectors may be removed while
making the screw connections.
When installing balanced audio connections, use the center pin for the common
or ground wire. The top or bottom pin may be used for either + or -, however, the
connections must be consistent throughout.
2.6 SETTING THE BAUD RATE
If the RS4x4HB is to be controlled through its RS232 port, it is important to set
the correct baud rate. One of four baud rates may be selected using positions 1 and
2 of the programming switch located on the rear panel of the RS4x4HB. Set the
switches as follows:
C
Phoenix connector
for Balanced
Audio