Interface specifications, Rs-485 specifications, Rs-485 termination switch settings – Sanyo DSR-M800 User Manual
Page 45: On 1 10, Address terminate 1 2 3, Data format communication protocol, Termination settings
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IN
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UCTIO
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PERA
T
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SETTI
NGS
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OTHER
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ER
OTHER
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, data
will be distorted and will affect other data, making the
data transmitted to each device incorrect.
Example
RS-485 specifications
Mode
Asynchronous
Character length
8 bits
Data transmission
speed
2400, 4800, 9600, 19200 bps
Parity check
None
Stop bit
1
RS-485 termination switch settings
ON
1
10
AUDIO
AC IN
ADDRESS
ADDRESS
AUTO/MANUAL
RS485
RS485
REMOTE
CLOCK
NON
ALARM IN
ALARM RESET
ALARM OUT
WARNING OUT
ALL
RESET
FULL OUT
ADJ REC OUT
A B C
C
C
C
IN OUT
TERMINATE
1 2 3 4 5 6 7 8
LAN
VIDEO
MIC IN
IN
OUT
IN
OUT
TV SYSTEM
NTSC
PAL
ON
OFF
ON
OFF
12V DC IN
POWER
ON
OFF
RS485
GND
1
0
A
A
B
B
ADDRESS
TERMINATE
1 2 3
ON
OFF
System controller
Termination
switch
Digital video recorder
RS485
termination
Termination
switch
Time – lapse VCR
e_dsr_m800.book Page 44 Friday, January 31, 2003 5:45 PM