Alpha Radio 87A, Руководство по эксплуатации

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Page 41
Alpha 87A User Manual Rev 2.0
Section
10
RS-232 Serial Communications
The status of the amplifier can be determined
via an RS 232 serial communications link.
You need to use a modem communications
program. For example, Windows
95/98/NT/2000 comes with one called
HyperTerminal. It is usually located under
ACCESSORIES. HyperTerminal
configuration files can be downloaded from
www.alpharadioproducts.com , in the tech tips
section.
When you click on HYPERTRM.EXE, it will
open a window for a new connection. Give it
a name, and in the next window select the
"Connect Using: Direct to COMx" pulldown
menu (in the bottom of the box on my version
of Win95); select the Com port you will use.
This is the same one that you were using with
the AlphaRemote software. If the COM port
you select is available it will open another box
called "COMx Properties". Going down the
list, select Bps-4800, Data bits-8, Parity-
NONE, Stop bits-1, Flow control-NONE. Click
OK to close the window. Now pull down the
FILE menu and click PROPERTIES. Click the
SETTING tab and then click ASCII SETUP at
the bottom of the window.
Click the box for "Echo typed characters
locally" (it could have a check in the box).
Click OK to close both windows.
Plug in the amp (power off) and it should be
communicating with the computer. Type VER
and press the Enter key. The 87A should
respond with the firmware version number. If
you see garbage you will need to remove pin
22 of the 25-pin end of the cable (the 87A
end). It is used to set the baud rate of the
amplifier (see below for a complete
explanation of connections).
Once communications are established with
the amplifier, type SF and HF to display the
Soft
Fault and Hard Fault logs (press Enter key
after each command). Save the result of
those commands. A list of more commands
follows this section.