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20
The MA352 may be remotely controlled from a com-
patible control system connected to the Rear Panel
RS232 Jack. The speed at which the MA352 com-
municates (8 bit, no parity and 1 stop bit) with other
equipment is adjustable from 9,600 bits per second to
115,200 bits per second. To change from the default
speed of 115,200 bits per second, perform the follow-
ing steps:
1. Press and hold in the INPUT Control to enter the
SETUP MODE. Refer to figure 3 on page 17.
2. Rotate the INPUT Control until “SETUP: RS232,
115200 Baud” appears on the Information Dis-
play. Refer to figure 28.
3. Rotate the VOLUME (ADJUST) Control to select
the desired Baud Rate Speed.
4. Exit the SETUP Mode by several presses of the
INPUT Control.
Figure 28
SETUP: RS232
115200 Baud
IR Sensor
The MA352 Front Panel Sensor, which receives the
signals from the HR085 Remote Control, can be
switched off to prevent interference when an external
IR Sensor is connected. To de-activate the Front Panel
IR Sensor perform the following steps:
1. Press and hold in the INPUT Control to enter the
SETUP MODE. Refer to figure 3 on page 17.
2. Rotate the INPUT Control until “SETUP: Front
IR, Enabled” appears on the Information Dis-
play. Refer to figure 31.
3. Rotate the VOLUME (ADJUST) Control to select
“Disabled”. Refer to figure 32.
4. Exit the SETUP Mode by several presses of the
INPUT Control.
Fig ure 31
SETUP: Front IR
Enabled
Figure 32
SETUP: Front IR
Disabled
Remote Control Codes
The Remote Control included with the MA352 utilizes
the NORMAL McIntosh Control Codes. The Second
Set of Control Codes the MA352 will respond to is
referred to as the ALTERNATE Codes. The Alternate
Codes are used when the MA352 is used in the same
location as another McIntosh Preamplifier and/or A/V
Processor. This will prevent the Remote Control from
affecting the operation of both units at the same time.
To activate the Remote Control ALTERNATE Codes
perform the following steps:
1. Press and hold in the INPUT Control to enter the
SETUP MODE. Refer to figure 3 on page 17.
2. Rotate the INPUT Control until “SETUP: IR
Codes, Normal” appears on the Information
Display. Refer to figure 29.
3. Rotate the VOLUME (ADJUST) Control to the
Alternate Codes. Refer to figure 30.
4. It is now necessary to change the HR085 Remote
Control over to the Alternate Codes. Information
on the HR085 Remote Control is available for
download from the McIntosh Web Site:
http://www.mcintoshlabs.com/us/Products/pages/
ProductDetails.aspx?CatId=preamplifiers&Produ
ctId=MA352
5. Exit the SETUP Mode by several presses of the
INPUT Control.
Figure 29
SETUP: IR Codes
Normal
Figure 30
SETUP: IR Codes
Alternate
Comm Port Baud Rate
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