Jackson Labs LC_XO, Manual

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© 2012 Jackson Labs Technologies, Inc. 11
LC_XO GPSDO User Manual
3
Control and Command
Utilities
3.1 Description
The LC_XO board can be connected to a freeware program available on the Jackson Labs
Technologies, Inc. website support page to control and monitor the unit called Z38xx. This program
runs under Windows.
Z38xx can be used to monitor and graphically plot the frequency and phase stability of the unit, the
number of Satellites being tracked, and various other GPS and TCXO performance parameters.
Z38xx needs to be properly configured under the “PARAMETERS” tab prior to operation by setting
up the correct serial parameters (115.2KBaud, 8N1).
Please consult the Z38xx user manual included in the CD ROM for further details.
Alternatively to the Z38xx application, GPSCon is a third-party program for the monitoring and
control of a variety of GPS time and frequency standard receivers. It communicates with the receiver
using the SCPI command set via the USB port. This utility can be obtained directly from Real Ham
Radio.com at the following URL:
http://www.realhamradio.com/gpscon-buy-now.htm
Important note: run Z38xx and GPSCon in Windows XP compatibility mode.
3.2 Z38XX Utility
3.2.1 Installation and Set Up
The Z38XX manual has instructions on how to install and set up the software. All the information
needed to run the program is available in the included user manual. Only some details of setup and
use will be provided here for convenient reference.
3.2.1.1 Parameter Setup
Before communication with Z38XX can take place, the communications parameters must be set. To
do so, click on the Parameters tab. The parameter window will appear as shown in
Figure 3.1 .