Knox Video RS16x16HB - Manual (Page 10)

KNOX VIDEO
RS16x16HB ROUTING SWITCHER KNOX VIDEO
RS16x16HB ROUTING SWITCHER
Page 15 Page 16
3.4.8 LAMP TEST
The lamp test which occurs automatically on powerup can be initiated through
the RS232 port by sending the two-byte command:
T (ENTER).
The lamp test does not disturb the existing crosspoint pattern.
3.4.9 ANSWERBACK MODES
The user may choose between two modes of answerback: verbose and nonverbose.
Select the mode using position 3 of the programming switch located on the rear panel of
the RS16x16HB. Position 3 ON is verbose, while position 3 OFF is nonverbose.
In the verbose mode, each time a routing command is sent, the current routing map
will be reported on the RS232 line followed by the word DONE.
The switches are read by the microprocessor only at power up; for switch
configuration changes to take effect, cycle the power input to the RS16x16HB.
SECTION 4. MAINTENANCE
NOTE: Maintenance of the RS16x16HB, except for changing the battery,
should be performed by qualified service people only.
4.1 INTRODUCTION
The only routine maintenance the RS16x16HB requires is to change the
battery located at the rear of the RS16x16HB unit.
4.2 HOW TO CHANGE THE MEMORY BACKUP BATTERY
The RS16x16HB is shipped with a memory backup battery which retains the
routing crosspoint information when power is off. The battery, approximately 1/2
inch in diameter, is mounted in a holder on the main printed circuit board. In the
event that crosspoint information is not retained during power off, the battery
must be replaced.
To change the battery, pry up the retaining bar gently and slip the old
battery out. Replace at least every five years with Knox part number 140896, or
commercial type DL1220.
4.3 SWITCH OPTIONS
An 8-position switch, accessible through the rear panel, is provided for
setting the baud rate and certain programming functions.
Switch positions 1 and 2 are used to set the baud rate for the RS232 control
port. One of four baud rates may be selected as follows:
BAUD RATE
19200
1200
2400
9600
SWITCH 1
ON
OFF
ON
OFF
SWITCH 2
ON
ON
OFF
OFF