User guide
Appendix
DCM-1 User Manual v1.0 51
Jumper locations and settings
The DCM-1 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.
NOTE: J15, J16, J17 and J18 are reserved.
The diagram below 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 8 screws securing the top cover of the DCM-1, and
remove it. Use a pair of snipe-nosed pliers to gently remove
the jumpers, and to reposition them if necessary. Rex the
top cover using the original screws.
Section 4 : Appendix
JUMPER NAME PURPOSE DEFAULT
J2 CDPM bus termination ABSENT = CDPM termination OFF
PRESENT = 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 = CDPM signal ground “lifted”
PRESENT = 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 rmware updates.
See table page 54.
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 CDPM power link OFF = CDPM power off
ON = DC power for CDPM is available at CDPM 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 tted 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
J2
J
6
J
13
J
7
J
14
J
8
J
9
J
10
J
11
J
15
J
16
J
17
J
18
J
32
J
27
J
28
J
30
J
31
J
29
J
26
J
34
J
33
J
25
J
24
(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)
Jumper Locations