© 2006 Jackson-Labs
15
FireFox Synthesizer User Manual
1.4.14.3 Controlling the M12+ GPS Receiver using a PC
You may use Motorola’s WinOncore12 Windows(tm) program to check the Motorola M12+ GPS
Timing receiver status, and to modify advanced settings of the GPS receiver such as Satellite Mask
Angles etc. Please see the GPS FAQs on the Jackson Labs website (www.jackson-labs.com) for
pointers where to download the WinOncore12 utility.
Follow these steps in order to be able to control the internal M12+ GPS receiver via WinOncore12:
1) Connect the RS-232 cable supplied with your FireFox Signal Generator to your PC’s COM:1 or
COM:2 serial port, and to the FireFox Signal Generators’ back panel RS-232 port labeled “RS-232
GPS” - see
Figure 1.6
.
2) Go to the FireFox menu
SETUP->COMMUNICATION->GPS
and choose
REMOTE.
You must
stay in the
REMOTE
menu in order to have external access to the GPS receiver. Leaving the
REMOTE
menu will disable external access to the GPS receiver.
3) Download, install and start the WinOncore12 program on your PC, and setup the communication
port under the
OPTIONS->COMMUNICATIONS->PC-COMMUNICATIONS
WinOncore12 menu.
Set the port you choose, and select 9600 Baud communications.
4) You should now see Satellite status information and be able to control the receiver with the
WinOncore12 program. Settings such as Satellite Mask Angles etc. will be stored in the internal GPS
receiver battery-backed NV memory.
1.4.15 Entering the Calibration Mode
The FireFox Signal Generator does not need to be frequency calibrated, it continuously calibrates its
internal time base using the built-in GPS receiver.
The analog RF Output BNC connector on the front panel does need periodic calibration to achieve
the specified level accuracy when in absolute (dBm) mode.
Press the
SETUP->CALIBRATION
menu button to enter calibration mode. Please see Chapter 4 for
an in-depth discussion about the requirements for executing a self-calibration of the RF amplitude
levels.
1.4.16 Entering SCPI Remote Control Mode
Beginning with Firmware Revision 3.0 and later, the FireFox Signal Generator may be controlled via
its rear panel RS-232 connector using the SCPI-99 industry standard communication protocol. See
Chapter 2 for a list of supported SCPI commands.
The user can manually enter the SCPI remote control mode by pressing
SETUP->COMMUNICATION->SCPI-MODE
in the menu.
The user may select the SCPI RS-232 communication BAUD rate via the
SETUP->COMMUNICATION->SERIAL SPEED
menu.
Summary of Contents for FireFox
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