Interface - Stanford Research Systems SR810 Manual

Dsp lock-in amplifier
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Interface

[Setup]
GPIB/SR-232
ADDRESS
Pressing the [Setup] key cycles through GPIB/RS-232, ADDRESS,
BAUD, PARITY and QUEUE. In each case, the appropriate parameter is
displayed in the Reference display and the knob is used for adjustment.
Press [Phase], [Freq], [Ampl], [Harm#] or [Aux Out] to return the display
to normal and leave Setup.
The SR810 only outputs data to one interface at a time. Commands may
be received over both interfaces but responses are directed only to the
selected interface. Make sure that the selected interface is set correctly
before attempting to program the SR810 from a computer. The first
command sent by any program should be to set the output to the correct
interface.
Setup GPIB/RS-232 displays the output interface. Use the knob to select
GPIB or RS-232.
Setup ADDRESS displays the GPIB address. Use the knob to select an
address from 0 to 30.
BAUD
Setup BAUD displays the RS-232 baud rate. Use the knob to adjust the
baud rate from 300 to 19200 baud.
PARITY
Setup PARITY displays the RS-232 parity. Use the knob to select Even,
Odd or None.
QUEUE
The last 256 characters received by the SR810 may be displayed to help
find programming errors. Setup QUEUE will display 4 characters (2 per
display) in hexadecimal (see below). Turn the knob left to move farther
back in the buffer, turn the knob right to move towards the most recently
received characters. A '.' is displayed to indicate the ends of the buffer.
All characters are changed to upper case, spaces are removed, and
command delimiters are changed to linefeeds (0A).
To leave this display, press [Setup] to return to GPIB/RS-232 before
pressing [Phase], [Freq], [Ampl], [Harm#] or [Aux Out] to return the
display to normal and leave Setup.
4-21
Front Panel

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