DK424i Installation
Step 6: Remote Expansion Cabinet Unit
Strata DK I&M 6/00
7-53
DK424i Ins
tal
lation
Remote Expansion Cabinet Unit
The RRCU1A PCB enables a
DK424i Expansion Cabinet to
be located up to three
kilometers from its Base
Cabinet. One RRCU1A
connects to up to two ribbon-
type Data Cables and applies
the inter-cabinet signal to a
fiber-optic pair. One fiber pair
can support one or two
expansion cabinets in one
remote location using one
RRCU1A in the Base Cabinet
and another in the Remote
Expansion Cabinet.
A DK424i Base Cabinet will
support up to five RRCU1A
PCBs. A DK424i will support
up to four Remote Expansion
Cabinets.
An inter-cabinet Data Cable in
the Base Cabinet is attached to
an RRCU1A which converts
the signal and uses an LED
source to apply the signal to
500 MHz/km multi-mode
fiber. Another RRCU1A in the
Remote Expansion Cabinet
receives the LED signal,
converts it back to its original form and applies it to a ribbon Data Cable connected to the Remote
Expansion Cabinet. See
This is a hardware solution and has no effect on software or administration. Remote cabinets
support all line and trunk interfaces. Network clock signals can only be derived from digital trunks
installed in the Base Cabinet (Master) location.
RRCU1A cards are used at both the Base (Master) and Remote (Slave) Cabinet locations. The card
set consists of an RRCU1A PCB and its ROMS1A daughter board. The RRCU1A connects to the
inter-cabinet Data Cables, holds the Remote/Slave option jumpers, and has an RS-232C port for
monitoring the fiber connection. (See
The ROMS1A daughter board holds an SC-type fiber connector, a connector for control of two
8-circuit DPFT units, and status LEDs.
Fiber Optic
Connection
Up to
3 Kilometers
(Dealer Supplied)
Expansion Cabinet (2)
Base Cabinet
Remote Expansion Cabinet (4)
MSBU
Remote Expansion Cabinet (3)
5235
1 (M1)
2 (S1)
3 (M2)
2
3
4
5
6
7
Optical Module
4 (S2)
1 (M1)
2 (S1)
3 (M2)
Optical
Module
4 (S2)
Local DK424 or DK424i Cabinets
Remote DK424 or DK424i Cabinets
Figure 7-33 Remote Expansion Cabinet Connection
Summary of Contents for Strata AirLink DK40i
Page 22: ...Introduction Related Documents Media xx Strata DK I M 6 00 ...
Page 48: ...DK14 Installation DK14 Wiring Diagrams 1 26 Strata DK I M 6 00 ...
Page 220: ...DK424 Installation Remote Cabinet Installation Instructions 5 68 Strata DK I M 6 00 ...
Page 262: ...DK424i Configuration Primary Reserve Power Cabinet Hardware 6 42 Strata DK I M 6 00 ...
Page 450: ...Universal Slot PCB Wiring Option Interface PCB Wiring Diagrams 10 42 Strata DK I M 6 00 ...
Page 592: ...Peripheral Installation Enhanced 911 Service E911 12 84 Strata DK I M 6 00 ...
Page 616: ...ACD Installation Spectrum Electronic Wall Boards 13 24 Strata DK I M 6 00 ...
Page 634: ...Fault Finding Fault Isolation Flowcharts 14 18 Strata DK I M 6 00 ...
Page 704: ...ISDN Interfaces ISDN Disconnect Cause Code 16 54 Strata DK I M 6 00 ...