PN-R903 (serv.man5) - Sharp Monitor Service Manual (repair manual). Page 21

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CHAPTER 2. INSTALLATION, ADJUSTMENT, SETTING
PN-R903/R703/R603 
INSTALLATION, ADJUSTMENT, SETTING
 2 – 6
<EXTERNAL SPEAKER TERMINALS>
n
To use an external speaker, set “SPEAKER SELECT” on the SETUP
menu to “EXTERNAL”.
n
Be sure to use external speakers with an impedance of 6  and a
rated input of at least 7 W.
1 ) Attach a speaker cable core to the end of the speaker cable con-
nected to the monitor.
CAUTION
n
Be sure to connect the + and - terminals and the left and right
speakers properly.
n
Avoid short circuiting the + and - terminals.
n
When “SPEAKER SELECT” is set to “EXTERNAL”, the internal
speaker is disabled.
<CONTROLLING THE MONITER WITH A PC (RS-232C)>
You can control this monitor from a PC via RS-232C (COM port) on the
PC.
You can also connect multiple monitors via a daisy chain by using a PC.
By assigning ID numbers to each monitor (see page 19), you can make
input mode selection/adjustment or can check the status of a specific
monitor.
You can also connect multiple monitors via a daisy chain by using a PC.
By assigning ID numbers to each monitor, you can make input mode
selection/adjustment or can check the status of a specific monitor.
CAUTION
n
To control the monitor via RS-232C, set RS-232C/LAN SELECT
to RS-232C.
n
You cannot use RS-232C and LAN control simultaneously.
<ONE-TO-ONE CONNECTION WITH A PC>
Connect with RS-232 straight cable between the PC's COM port (RS-
232C connector) and the RS-232C input terminal on the monitor.
<DAISY CHAIN CONNECTION [ADVANCED OPERATION]>
Connect with RS-232 straight cable between the PC's COM port (RS-
232C connector) and the RS-232C input terminal on the first monitor.
Next, connect RS-232 straight cable to the first monitor's RS-232C out-
put terminal and to the second monitor's RS-232C input terminal. Con-
nect in the same way to the third and subsequent monitors.
Up to 25 monitors can be connected. (Depending on the length of the
cable used and the surrounding environment.)
<COMMUNICATION CONDITIONS>
Set the RS-232C communication settings on the PC to match the moni-
tor's communication settings as follows.
*
1 Set to the same baud rate as the “BAUD RATE” setting of 
SETUP menu.
When connecting multiple monitors in a daisy chain, set all mon-
itors to the same “BAUD RATE”.
Approx.
3-15/16 inch
(10 cm)
56&
56&
Computer
to COM Port
Straight cable
(Commercial item)
Input taerminal
Baud rate
38400 bps (Initial setting) 
*
1
Data length
8 bits
Parity bit
None
Stop bit
1 bit
Flow control
None 
7R&20SRUW
56&
6WUDLJKWFDEOH
㸦&RPPHUFLDOLWHP㸧
&RPSXWHU
VW
QG
56&
,QSXW
56&
2XWSXW
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