User's Manual

SECTION 4: FACTORY TEST PROCEDURE
516.80548.POM_REVA_Product_Owner's_Manual_M64780D25_FCCRpt.doc Page 37 of 44
ECN-5277
44
Downlink Hardware Timing Verification
The figure below displays a plot of the downlink timing characteristics. Channel 1 is connected to RSSI,
channel 2 is connected to recovered audio, and channel 3 is connected to the modem CS pin. The scope
is in the high-resolution acquisition mode.
There is a very short period of quiet time (no modulation) followed by approximately 12 milliseconds of
modem synchronization time (sync time).