3 – 10
Remote Operation
3.4.4
General commands
Instrument Help
HELP(?)
Outputs a condensed version of Section 3.4 to the remote interface.
HELP
may be used with or without the query sign, with the same
e
ff
ects.
HELP?
Example:
Notation:
i is bit number (0..7);
j is a 16-bit unsigned integer (0..65535);
m is a small unsigned integer (1..3);
y, z are tokens
(?) question required for queries, illegal for set commands;
[] = parameter is optional for both set and query forms;
{} = parameter is required to set, illegal for queries;
parameter without brackets is always required;
the brackets themselves should not be sent.
General commands:
HELP?
- Send this text.
AWAK(?) {z}
- Keep the module clock awake.
Configuration commands:
FPLC(?) {j}
- Power line rejection frequency (50, 60).
GAIN(?) {m}
- Set/query gain.
INPT(?) {z}
- Input (OPEN, CLOSE).
BIAS(?) {z}
- Bias (GND, ON).
SHLD(?) y {,z}
- Shield (INPUT, BIAS)
(GND, BIAS, FLOAT, PROG).
CHOP(?) {z}
- Autozero OFF/ON.
SYNC(?) {z}
- Reference clock IN/OUT.
FREQ?
- Reference clock frequency (Hz).
PHAS?
- Switch position (Zero Amp, Zero Zero).
APLL(?) {z}
- Keep PLL active when autozero is off.
Calibration commands:
ACAL
- One-time autocalibration.
READ? m
- Check intermediate/output voltage (uV).
OFST(?) m {,j}
- Set/query offset trim.
Status commands:
*CLS
- Clear Status.
*STB?
[i]
- Query the Status Byte.
*SRE(?) [i,] {j} - Service Request Enable.
SIM918
Precision Current Preamplifier
Summary of Contents for SIM918
Page 4: ...ii Contents SIM918 Precision Current Preamplifier ...
Page 7: ...General Information v SIM918 Precision Current Preamplifier ...
Page 12: ...x General Information SIM918 Precision Current Preamplifier ...
Page 62: ...3 30 Remote Operation SIM918 Precision Current Preamplifier ...
Page 63: ...4 Circuit Description In This Chapter 4 1 Schematic Diagrams 4 2 4 1 ...
