Aeroflex GPSG-1000 Application Note
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Aeroflex GPSG-1000 Application Note

Aeroflex GPSG-1000 Application Note

Portable satellite simulator. dual rf channel operation
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See also: Operating Manual
http://www.avionteq.com/IFR-Aeroflex-GPSG-1000-Portable-Satellite-Simulator.aspx
Application
Some GPS receivers require 2 GPS channels to be
present at the same time for proper GPS signal reception.
For example; a dual channel GPS receiver designed for L1
and L2C operation.
This can be accomplished by using two GPSG-1000 units
simultaneously in order that the outputs of the units, each
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Note
GPSG-1000 Dual RF Channel
operating on a different RF channel, can be combined to
provide a single synchronized RF output.
This Application Note defines the procedure to
synchronize two GPSG-1000 units and combine the RF
channel outputs.
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Operation

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Summary of Contents for Aeroflex GPSG-1000

  • Page 1 This Application Note defines the procedure to and L2C operation. synchronize two GPSG-1000 units and combine the RF This can be accomplished by using two GPSG-1000 units channel outputs. simultaneously in order that the outputs of the units, each www.aeroflex.com...
  • Page 2 Oscilloscope 500 MHz BW Tektronix TDS3000C (example) See Figure 1 for equipment interconnection. The interface cables for the AUX connectors on the GPSG-1000 units will be locally fabricated. Note: The RF Combiner Firmware version may be checked in the following manner: 1.
  • Page 3 3. Set up the pulse generator to provide a manually triggered one time pulse. The pulse should be set up as per Figure 2. 1. Both GPSG-1000 units must be using the same almanac data. Please ensure the almanacs are the same for both units before continuing.
  • Page 4 Reference Source to INT, and Trigger to External. See Figure 3. Figure 5 Figure 3 7. On the GPSG-1000 #1 Setup screen in the GNSS fields, set GNSS 5. On GPSG-1000 #2 Menu Bar select Setup. On the Setup screen to GPS+Galileo and Carrier to L1/E1. See Figure 5.
  • Page 5 Figure 7 be less than 10 nSec. Note: This step confirms that the GPSG-1000 units are operating in sync. If the time difference is not correct, then check the set up and try again. 10. On both GPSG-1000 units Simulation screen press the Run switch.
  • Page 6 All trademarks are acknowledged. i n f o - t e s t @ a e r o f l e x . c o m Parent company Aeroflex, Inc. ©Aeroflex 2011. Part No. 46900/808, Issue 1, 07/12...

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