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■ Connection with the Extension Units
● SCSI Connection
The Digital Disk Recorder WJ-HD500B controls
the extension units through the SCSI chain.
1. Connect the supplied SCSI cable between
the EXT STORAGE port on the WJ-HD500B
and the EXT IN port on the 1st extension
unit.
2. Connect the supplied SCSI cable between
the EXT OUT port on the 1st extension unit
and the EXT IN port on the 2nd extension
unit.
Repeat connections in the same manner for
all additional extension units.
3. The 3rd extension unit must be a WJ-
HDE505B if a further extension unit is con-
nected. Use WJ-HDE500B if the 3rd unit is
located at the end of the SCSI chain.
Up to 6 extension units can be added.
● Switch Setting
Data termination and SCSI number settings are required, as
shown below.
1. Set the MODE switch #2 on the rear of the WJ-HD500B
to ON when connecting with an extension unit.
2. Set the SCSI ID number for each unit by pressing the
[–] or [+] button on the rear of the Extension Unit.
0 to 5 are applicable to the extension units.
Note: SCSI ID 6 and 7 are reserved for WJ-HD500B
Disk Recorder.
3. Set the termination switches on the rear of the Extension
Units to ON or OFF.
ON: Is applied to the extension unit located at the end
of the SCSI chain.
OFF: Is used for units other than the end unit.
EXT STORAGE
SIGNAL GND
SIGNAL GND
PO
PO
WER
WER
AC IN
C IN
SCSI ID
SCSI ID
EXT OUT
EXT OUT
EXT IN
EXT IN
TERMINA
TERMINA
TOR
OR
GND
GND
THERMAL ERR
THERMAL ERR
OR OUT
OR OUT
NC
NC
+
–
OFF
OFF
ON
ON
ON
ON
OFF
OFF
SIGNAL GND
SIGNAL GND
PO
PO
WER
WER
AC IN
C IN
SCSI ID
SCSI ID
EXT OUT
EXT OUT
EXT IN
EXT IN
TERMINA
TERMINA
TOR
OR
GND
GND
THERMAL ERR
THERMAL ERR
OR OUT
OR OUT
NC
NC
+
–
OFF
OFF
ON
ON
ON
ON
OFF
OFF
SIGNAL GND
SIGNAL GND
PO
PO
WER
WER
AC IN
C IN
SCSI ID
SCSI ID
EXT OUT
EXT OUT
EXT IN
EXT IN
TERMINA
TERMINA
TOR
OR
GND
GND
THERMAL ERR
THERMAL ERR
OR OUT
OR OUT
NC
NC
+
–
OFF
OFF
ON
ON
ON
ON
OFF
OFF
SIGNAL GND
SIGNAL GND
PO
PO
WER
WER
AC IN
C IN
SCSI ID
SCSI ID
EXT OUT
EXT OUT
EXT IN
EXT IN
TERMINA
TERMINA
TOR
OR
GND
GND
THERMAL ERR
THERMAL ERR
OR OUT
OR OUT
NC
NC
+
–
OFF
OFF
ON
ON
ON
ON
OFF
OFF
SIGNAL GND
SIGNAL GND
PO
PO
WER
WER
AC IN
C IN
SCSI ID
SCSI ID
EXT OUT
EXT OUT
EXT IN
EXT IN
TERMINA
TERMINA
TOR
OR
GND
GND
THERMAL ERR
THERMAL ERR
OR OUT
OR OUT
NC
NC
+
–
OFF
OFF
ON
ON
ON
ON
OFF
OFF
SIGNAL GND
SIGNAL GND
PO
PO
WER
WER
AC IN
C IN
SCSI ID
SCSI ID
EXT OUT
EXT OUT
EXT IN
EXT IN
TERMINA
TERMINA
TOR
OR
GND
GND
THERMAL ERR
THERMAL ERR
OR OUT
OR OUT
NC
NC
+
–
OFF
OFF
ON
ON
ON
ON
OFF
OFF
16
16
15
15
14
14
13
13
12
12
11
11
10
10
9
9
8
8
7
7
6
6
5
5
4
4
3 2
23
1
1
SIGNAL GND
10/100
BASE-T
SPOT
OUT
IN EXT STORAGE COPY
CONTROL ALARM
VIDEO
MODE
DATA
REMOTE(WV-CU50)
GEN-LOCK OUT
SERIAL
POWER
ON
AC
IN
OFF
IN
OUT
OUT
MULTI SCREEN OUT
AUDIO
Digital Disk Recorder
WJ-HD500B
SCSI ID = 6 and 7
Extesion Unit #1
WJ-HDE500B
SCSI ID = 5
Extesion Unit #2
WJ-HDE500B
SCSI ID = 4
Extesion Unit #3
WJ-HDE500B or
WJ-HDE505B*
SCSI ID = 3
Extesion Unit #4
WJ-HDE500B
SCSI ID = 2
Extesion Unit #5
WJ-HDE500B
SCSI ID = 1
Extesion Unit #6
WJ-HDE500B
SCSI ID = 0
SCSI CableSCSI Cable SCSI Cable
SCSI Cable
SCSI CableSCSI Cable
* Use a WJ-HDE505B for the 3rd unit position if additional units are installed.
Use a WJ-HDE500B if the 3rd position is the end of the SCSI chain.
1
+
–
SCSI ID
TERMINATOR
ON
OFF
1 2 3 4
MODE
ON