Programming; Remote Programming; Introduction; Command Syntax - Stanford Research Systems SR570 User Manual

REMOTE PROGRAMMING

Introduction

The SR570 is equipped with a standard DB-25
RS-232 connector on the rear panel for remote
control of all instrument functions. The
interface is configured as listen-only, 9600 baud
DCE, 8 data bits, no parity, 2 stop bits, and is
optically isolated to prevent any noise or
grounding problems.
The ERROR LED on the front panel will light if
the SR570 receives an unknown or improperly
worded command. The LED will remain lit until
a proper command is received.
Data are sent to the instrument on pins 2 and 3,
which are shorted together. The data flow
control pins (5,6,8,20) are shorted to each other.
The ground pins (1 & 7) are connected to each
other but optically isolated from the amplifier
circuit ground and the chassis ground.

Command Syntax

The following is a list of commands used to
program the SR570. All RS-232 commands
consist of four letter codes followed, in most
cases, by an integer value (n). Commands must
end with a carriage return and line feed <CR>
<LF>.

PROGRAMMING

DETAILED COMMAND LIST

Sensitivity control commands
SENS n
n
0, 1, 2
3 ,4, 5
6 ,7, 8
9, 10, 11
12, 13, 14
15, 16, 17
18, 19, 20
21, 22, 23
24, 25, 26
SUCM n
SUCV n
Input Offset Current control commands
IOON n
IOLV n
n
0, 1, 2
3, 4, 5
6, 7, 8
9, 10, 11
12, 13, 14
15, 16, 17
18, 19, 20
21, 22, 23
24, 25, 26
27, 28, 29
10
Sets the sensitivity of the amplifier
according to the following table:
scale
1, 2, 5 pA/V
10, 20, 50 pA/V
100, 200, 500 pA/V
1, 2, 5 nA/V
10, 20, 50 nA/V
100, 200, 500 nA/V
1, 2, 5 µA/V
10, 20, 50 µA/V
100, 200, 500 µA/V 27 1 mA/V
Sets the sensitivity cal mode. 0 = cal, 1
= uncal.
Sets the uncalibrated sensitivity vernier.
[0 ≤ n ≤ 100] (percent of full scale).
Turn the input offset current on (n=1) or
off (n=0).
Sets the calibrated input offset current
level according to the following table:
scale
1, 2, 5 pA
10, 20, 50 pA
100, 200, 500 pA
1, 2, 5 nA
10, 20, 50 nA
100, 200, 500 nA
1, 2, 5 µA
10, 20, 50 µA
100, 200, 500 µA
1, 2, 5 mA