© 2017 Jackson Labs Technologies, Inc. 11
Mini-JLT GNSS™ User Manual
SCPI-Control Quick
Start Instructions
3.1 Introduction
The SCPI (Standard Commands for Programmable Instrumentation) subsystem is accessed via the
TTL or USB serial interfaces and a terminal program. By default the terminal settings are 115200,
8N1, no flow-control.
There are a number of commands that can be used as listed below. Most of these are identical or
similar to Symmetricom 58503A commands. To get a listing of the available commands, send the
HELP? query. This will return a list of all the available commands for the Mini-JLT GNSS™
GPSDO.
Additional information regarding the SCPI protocol syntax can be found on the following web site:
http://www.ivifoundation.org/scpi/
A basic familiarity with the SCPI protocol is recommended when reading this chapter.
3.2 General SCPI Commands
3.2.1 Quick Start Commands
For a quick start, try the following SCPI serial port commands:
help?
syst:stat?
gps?
sync?
meas?
3.2.2 *IDN?
This query outputs an identifying string. The response will show the following information: