Yamaha MRX7-D, Owner'S Manual

Page: 10 / 36

Controls and Connectors
MRX7-D Owner’s Manual 10
q
AC IN connector
Use the included power cord to supply power to this connec-
tor. First, connect the power cord to this device, and then
insert the power cord plug into the AC outlet.
w
Ground screw
The supplied power cord has a three-prong plug that will
ground the device when plugged into an appropriately
grounded three-prong type AC mains outlet. In some cases,
you may be able to reduce hum or interference by also con-
necting this screw to ground.
e
Cooling vent
The MRX7-D contains a cooling fan. The cooling air is
exhausted here, so please be careful not to block this vent.
r
[GPI] connector
This Euroblock connector allows input and output of control
signals via GPI (General Purpose Interface).
The MRX7-D provides sixteen ports of analog/digital input,
one port of digital input, and eight ports of output. The [IN]-
1–15 terminals detect voltage changes from 0V to 5V. The
[IN]-16 terminal alone su24V input; voltages in the
range of 2.5–24V are detected as High, and voltages below
2.5V are detected as Low. The [OUT]-1–8 terminals are
open collector outputs; they will change between open or
closed (Ground). The +5VDC terminals has an output volt-
age of 5V. Use the included Euroblock plugs to make con-
nections (see “Euroblock plug connection” on page 13 for
details).
For details on connections and usage, refer to “Connecting
via the [GPI] connector” on page 20.
t
[RS-232C] connector
This 9-pin D-SUB connector allows connection to an RS-
232C compatible controller such as those from AMX or Cre-
stron.
y
[UNIT ID] rotary switch
When multiple devices are connected within the same net-
work, this switch specifies the UNIT ID by which MRX7-D
devices are individually distinguished.
DIP switches 1 and 2 described below specify the upper
digit, and this rotary switch specifies the lower digit,
together allowing you to set the UNIT ID to one of 63 possi-
bilities in the range of 01 to 3F.
u
DIP switches
These switches enable you to specify the settings related to
the startup operation of the unit.
Refer to the following for details.
Rear Panel
q y u !0 i o !1 !2
w !3
r e
!4
t
NOTE
The MRX7-D has some connectors that are shaped identically
but have a completely different function (e.g., [DCP] connector,
Dante [PRIMARY]/[SECONDARY] connectors, [YDIF] connec-
tors). Make the appropriate connections as instructed by the
explanation for each connector. Otherwise, you risk damaging
your equipment.
CAUTION
Do not input a voltage higher than 5V to the [IN]-1–15
terminals. Doing so may damage your equipment.
NOTE
• Do not use a UNIT ID of “00” (DIP switches 1 and 2 OFF
and the rotary switch at 0).
• You’ll need to restart the device after changing the setting
of the [UNIT ID] rotary switch.
NOTE
Set the DIP switches while the power to the unit is turned
OFF. Otherwise, the setting will not be effective.
Switch Status
Represent a status with switch toggled up.
Represent a status with switch toggled
down.