Installing the Network Gateway Unit (Continued)
Connecting an IDR-6A Network Repeater
To achieve the transmission path integrity required by EN54-2:
To achieve the transmission path integrity required by EN54-2:
12.5.3, the repeater and NGU must be physically connected as
12.5.3, the repeater and NGU must be physically connected as
shown opposite to create a single enclosure.
shown opposite to create a single enclosure.
1 Prepare one knockout at the top of the repeater and one knockout at the
1 Prepare one knockout at the top of the repeater and one knockout at the
base of the NGU.
base of the NGU.
2 Install the NGU and repeater with the repeater directly below the NGU and
2 Install the NGU and repeater with the repeater directly below the NGU and
with the prepared knockouts aligned.
with the prepared knockouts aligned.
3 Connect the repeater and NGU using a suitable short coupling through
3 Connect the repeater and NGU using a suitable short coupling through
the knockouts.
the knockouts.
4 Route the cross-over ribbon cable (supplied with the NGU) through the
4 Route the cross-over ribbon cable (supplied with the NGU) through the
coupling. Connect one end to the RS232 connector on the NGM and the
coupling. Connect one end to the RS232 connector on the NGM and the
COUPLING
COUPLING
other end to the RS232 connector on the repeater's termination board. A
other end to the RS232 connector on the repeater's termination board. A
ferrite is required immediately above the coupling.
ferrite is required immediately above the coupling.
5 Route the dc power wiring to the repeater through the coupling (use the
5 Route the dc power wiring to the repeater through the coupling (use the
NGU's 500mA output).
NGU's 500mA output).
NGU - SEE NGM
AND PSU3A TO NETWORK INTERFACE
PCB PROCEDURES
NGM
PSU
INTERFACE
PCB
NGU TO IDR-6A REPEATER INTERCONNECTIONS
NON-COMPLIANT LONGER-RUN CONNECTION
1 Prepare one knockout at the top of the repeater and one knockout at the
1 Prepare one knockout at the top of the repeater and one knockout at the
NGU (illustration shows the base, but a top knockout can be used).
NGU (illustration shows the base, but a top knockout can be used).
2 Install Isolated RS232 Boards in the repeater and NGU. Route the wiring
2 Install Isolated RS232 Boards in the repeater and NGU. Route the wiring
(max. 15m) between them through the knockouts (CTS and RTS are not
(max. 15m) between them through the knockouts (CTS and RTS are not
needed). A ferrite is required immediately adjacent to the knockout.
needed). A ferrite is required immediately adjacent to the knockout.
3 Route the dc power wiring to the repeater through the knockouts (use the
3 Route the dc power wiring to the repeater through the knockouts (use the
NGU's 500mA output).
NGU's 500mA output).
Use appropriate glands on all knockouts.
Use appropriate glands on all knockouts.
NGU - SEE ISOLATED RS232 PCB
AND PSU3A TO NETWORK INTERFACE
PCB PROCEDURES
NGM
PSU
INTERFACE
PCB
8
REPEATER - SEE 997-411
SECTION 2.8 FOR DETAILED
WIRING INFORMATION
CROSS-OVER RIBBON
TERMINATION
PCB
DC POWER CONNECTION
REPEATER - SEE 997-411
SECTION 2.8 FOR DETAILED
WIRING INFORMATION
RS232 LINK
ISOLATED
RS232 PCB
ISOLATED
RS232 PCB
RIBBON
DC POWER CONNECTION
NGU TO IDR-6A REPEATER INTERCONNECTIONS
RIBBON
TERMINATION
PCB
997-451, Issue 6 July 2006
