Appendix D: Program Examples - Stanford Research Systems SR530 Manual

Appendix D:
Program Examples
All of the program examples which follow do the
same thing, only the computer, language, or
interface is changed. The programs read the
Channel 1 and 2 Outputs and write the results to
the computer screen. In addition, the X6 analog
output port is ramped from 0 to 10V.
Program Example 1:
IBM PC, Basic, via RS232
In this example, the IBM PC's ASYNC port (known
as COM1: or AUX: to DOS users) will be used to
communicate with the SR530. Only two wires
between the IBM PC's ASYNC port and the
SR530 are needed (pins #2 & #3 of the RS232),
but pins 5,6,8 and 20 should be connected
together on the connector at the IBM end.
10 '
EXAMPLE PROGRAM TO READ THE SR510 OUTPUT AND RAMP THE X6 ANALOG OUTPUT
20 '
USING IBM PC BASICA AND THE COM1: RS232 PORT.
30 '
THE RAMP ON X6 CAN BE WATCHED BY SETTING THE SR530 DISPLAY TO A/D.
40 '
50 '
60 '
ON THE REAR PANEL OF THE SR530, SET SWITCH #1 OF SW2 DOWN
70 '
AND ALL OTHER SWITCHES IN SW2 UP. (9600 BAUD, NO PARITY)
80 '
90 OPEN "COM1:9600,N,8,2,CS,DS,CD" AS #1
100 ' SET UP COM1: PORT TO 9600 BAUD, NO PARITY, 8 DATA BITS, 2 STOP BITS,
110 '
120 '
130 '
140 PRINT #1, " " 'CLEAR UART BY SENDING SPACES
150 PRINT #1, "Z" 'RESET SR530
160 FOR I = 1 TO 200: NEXT I
170 '
180 X = 0
190 '
200 PRINT #1, "Q1"
210 INPUT #1,V1
220 PRINT #1, "Q2"
230 INPUT #1,V2
240 '
250 PRINT "CH1 = ";V1;"
260 '
270 X =X + .0025
280 IF X > 10 THEN X = 0
290 PRINT #1, USING "X6, ##.###";X
300 '
310 GOTO 200
IGNORE CTS (CLEAR TO SEND), DSR (DATA SET READY),
AND CD (CARRIER DETECT).
'WAIT FOR RESET TO FINISH
'INIT X6 OUTPUT TO ZERO
'READ OUTPUT
'INTO V1
'READ OUTPUT
'INTO V2
CH2 = ";V2
'INCREMENT X6 OUTPUT BY 2.5 MV
'RESET X6 RAMP
'SET X6 OUTPUT VOLTAGE
'LOOP FOREVER
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