Ensemble Designs 9400 3G Test Signal and Sync Pulse Generator - Manual (Page 20)

www.ensembledesigns.com Avenue 7400 and 9400 - Page 20
Model 7400 HD/SD and Model 9400 3G/HD/SD Sync Pulse Generator and Test Signal Generator
H1 Jumper Positioning
When field installing the 7400-GPS Option, move the H1 jumper to the GPS position, as shown in
the photo below, to lock to the GPS reference signal. 7400 and 9400 modules ship from the factory
with the H1 jumper installed in the INT position, locking to the 7400’s internal TCXO (Temperature
Compensated Crystal Oscillator).