Agilent Technologies 8935 Series, Manual

Page: 303 / 343

302 Chapter 10
Block Diagrams
CDMA Generator Section
CDMA Generator Section
Data Generation
The A2A34 Data Buffer, see Figure 10-14 on page 304 , generates or
buffers external data that emulates a CDMA traffic channel and
outputs this data to the A2A100 CDMA Generator Reference, see
Figure 10-13 on page 303 . The CDMA Generator Reference assembly
converts the data into I and Q drive signals and sends it back to the
Data Buffer to be summed with calibrated noise sources. The signals
are then passed to the A2A120 LO IF/IQ Modulator for modulation with
RF.
CDMA Reference
The A2A100 CDMA Generator Reference, see Figure 10-13 on page 303 ,
supplies all the CDMA clocks for the A2A36 Receive DSP and the
A2A34 Data Buffer. The CDMA Generator Reference also provides
reference switching for an external or the internal reference source.