SENSORNET SINGLE-POSITION JUNCTION BOX (J-BOX)
8000-2573-21, REV. F
INSTALLATION GUIDE
7 of 10
Procedure
1. Turn power switch in J-Box to off (0). Power
LED should be off.
2. Route power and data cables through strain
relief fittings in bottom of box.
Referring to Figure 8:
3. Connect power and data cables to 5-pin
compression connector (supplied on board).
Color code shown is for composite cable.
5-Pin Compression Connector
Pin Wire
Color
Description
1 YEL
SensorNet
2 WHT AC
3 RED Ground
4 BLK AC
5 BRN
SensorNet
4. Plug 5-pin connector into receptacle P1.
5. Connect auxiliary and host data cables to 4-pin
compression connector P8 (supplied on board).
Color code shown is for composite cable.
4-Pin Compression Connector
Pin Wire
Color
Description
1 YEL Host
2 BRN Host
3 YEL Aux.
4 BRN Aux.
6. Plug 4-pin connector into receptacle P8.
7. Place jumper JW1 (Dome) across pins 1–2 to
terminate J-Box (default setting) when the
J-Box is to be the end point of a data line.
Place JW1 across pins 2-3 (unterminated) if
the J-Box is to be the hub of a star network.
For jumpers JW2 and JW3: See
Communications
Protocols and Cable Networks
, 8000-2573-19.
Figure 8. PCB connectors and jumpers
P7
P8
SNet
AC
Gnd
AC
SNet
BRN
BLK
RED
WHT
YEL
–
–
–
–
–
123
456
AUX
HO
S
T
FA
L
S
E
C
D
1
1
1
SensorNet PCB
Aux
Aux
Host
Host
AC PWR
+5Vdc
P1
1
DO
M
E
1
23
AU
X
HO
S
T
JW
2
JW
1
JW
4
1-2 Terminated*
2-3 Unterminated
1
1
(*Default setting)
Testing for Power and Data
LEDs on the circuit board (Figure 8) verify that
power and data are entering the J-Box.
LED Indication
AC PWR
Glows yellow to indicate 24 volt
AC power from transformer.
+5Vdc
Glows green to indicate DC
power from on-board regulator.
False CD
Glows red for 1/2 sec. to indicate
spurious false carrier detects.*
Carrier
Detect 123
Glows yellow to indicate
communications from connector
P1 to dome.*
(Carrier Detect 456 is not used.)
Carrier
Detect Aux.
Glows yellow to indicate
communications from auxiliary
device.*
Carrier
Detect Host
Glows yellow to indicate
communications from Host.*
* Retriggerable indicators remain on if triggered faster
than the remaining time.
Power and Data
Host and
Aux Data
