Cloud Electronics DCM1 - Manual (Page 65)

DCM1 & DCM1e Installation and User Guide V1.0 65
PCB jumper locations and settings.
The DCM1 has various internal jumpers, the setting of which
may require alteration during installation. The table below
lists each jumper and its purpose, together with the factory
default setting.
The diagram below the table shows the locations of the internal
jumpers (not to scale). In the case of the jumpers having two
possible positions, the black square in the symbol indicates
the default setting. If any jumpers need to be changed, undo
the eight screws securing the top cover of the DCM1, and
remove it. Use a pair of snipe-nosed pliers to gently remove
the jumpers, and to reposition them if necessary. Refix the
top cover using the original screws.
JUMPER NAME PURPOSE DEFAULT
J2 PM/CDPM bus termination
ABSENT = PM/CDPM termination OFF
PRESENT = PM/CDPM termination ON
Present
J6 CDR-1 Port A bus termination
ABSENT = CDR-1 Port A termination OFF
PRESENT = CDR-1 Port A termination ON
Present
J7 CDPM ground link
ABSENT = PM/CDPM signal ground “lifted”
PRESENT = PM/CDPM signal ground connected
Present
J8 Reset Installer PIN
Reinstates original factory key for enabling Installer
Mode. Replace after use.
Off
J9 Force Factory Defaults
Reinstates original factory settings except Input/
Zone/Group names. Replace after use.
Off
J10 Bootloader baud rate: select 1
Changes baud rate for firmware updates. See table
page 70.
Off
J11 Bootloader baud rate: select 2 Off
J13 CDR-1 Port B bus termination
OFF = CDR-1 Port B termination OFF
ON = CDR-1 Port B termination ON
Present
J14 PM/CDPM power link
OFF = PM/CDPM power off
ON = DC power for PM/CDPM is available at
CDPM/PM IN connector.
Present
J24 Paging mic phantom power
OFF: paging mic phantom power OFF
ON: paging mic phantom power ON
Off
J25 EQ Module: Zone 1 R
Must be present if no EQ module is fitted Present
J26 EQ Module: Zone 2 R
J27 EQ Module: Zone 3
J28 EQ Module: Zone 5
J29 EQ Module: Zone 6
J30 EQ Module: Zone 7
J31 EQ Module: Zone 4
J32 EQ Module: Zone 8
J33 EQ Module: Zone 1 L
J34 EQ Module: Zone 2 L
NOTE: J15, J16, J17 and J18 are reserved.
J2
J6 J13
J7
J14
J8 J9 J10 J11
J15 J16 J17 J18
J32 J27 J28 J30 J31 J29 J26 J34 J33 J25 J24
(UPPER PCB)
(LOWER PCB)
KEY:
Jumper with two possible positions; black
square indicates factory default setting.
Jumper with one position (i.e., present or not)