Agilent Technologies E8285A manual Frame Clock

Chapter 4, Description of Fields

Fields

In addition, the post detection bandwidth is set at <20 Hz and >99 kHz in the Active, Register and Page states, and 300 Hz to 15 kHz when in the Connected state. This is done to ensure that no signaling tones are filtered off. This wide post detection bandwidth allows more noise to be introduced into the measurement process which affects the measured deviation.

Given these conditions it is recommended that FM deviation measurements requiring full Test Set FM deviation accuracy be made on the ANALOG MEAS screen or the AF ANALYZER screen. The audio frequency gains stages are set to autorange while on these screens and post detection filters can be selected to optimize deviation measurements.

Screens Where Field is Present

CALL CONTROL

ANALOG MEAS

Frame Clock

This field is used to select the CDMA frame clock output frequency on the rear- panel CDMA CLOCK MUX OUTPUT.

Operating Considerations

The CDMA frame clocks provide the CDMA timing references for generating and demodulating CDMA signals.

The CELLSITE/TRIGGERS connector, a rear-panel miniature D-type 15-pin connector provides all of the above frame clock outputs simultaneously. The timing of these frame clocks may be offset slightly from the timing of the CDMA CLOCK MUX OUTPUT’s frame clocks due to propagation delays.

See Also

"CELL SITE/TRIGGERS" on page 70 "CDMA CLOCK MUX OUTPUT" on page 71

Screens Where Field is Present

CONFIGURE

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