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1 INTERFACE SPECIFICATIONS
Data format
Communication protocol
A proprietary Sanyo protocol (SSP: Security Serial
Protocol) is used. Use of a special controller for operation
is recommended. To obtain this controller, contact a Sanyo
service center.
Termination settings
When connecting multiple devices, you must make
termination settings on both end devices.
z Set the RS-485 termination switch of both end devices
to ON.
z Be sure to set the RS-485 termination switches of all
devices in between (devices other than the first and last
devices) to OFF.
z If you don’t make the correct termination settings, the
incorrect data will be transmitted to each device.
Example
RS-485 specifications
Mode Asynchronous
Character length 8 bits
Data transmission speed 2400, 4800, 9600, 19200 bps
Parity check None
Stop bit 1 bit
RS-485 termination switch settings
LAN
VIDEO
MIC IN
IN
OUT
IN
OUT
NTSC
PAL
ON
OFF
ON
OFF
ON
OFF
System controller
Termination
switch
Digital video recorder
RS485
termination
Termination
switch
Time – lapse VCR
e00_l8hae_us_7.book Page 48 Thursday, April 8, 2004 11:14 AM