Agilent Technologies 83236B, Operating Manual, Page: 69 / 164

69
Chapter 3, Programming the PCS Interface using GPIB Control
Overview of Programming Issues
Figure 23 PCS Interface block diagram
NOTE: The frequency conversion tables, used internally by the PCS Interface’s CPU to determine
the Test Set’s frequencies, are shown in Appendix A, Frequency Conversion Tables on
page 137.
The frequencies desired at the UUT’s ports are set using GPIB commands. When
the PCS Interface receives the generator or analyzer frequency settings over
GPIB, its CPU automatically controls the conversion/bypass and internal LO
settings in its generator and analyzer paths. In addition, the PCS Interface’s CPU
determines the frequencies required for the Test Set’s RF generator and analyzer.
These values are returned over GPIB and are then used by the controlling
software to set the Test Set’s generator and analyzer frequencies.
Pwr Det
TEMP Sense
ADC CPU GPIB
Serial
REF
1050 or 1060 MHz
790, or 990 MHz to 1110 MHz
10 MHz step
0 to 70 dB
10 dB step
RF IN/OUT
1710 to 1990 MHz
(to UUT)
RF OUT only
1710 to 1990 MHz
(to UUT)
EXT TRIG IN
(Frame Clk from
GPIB (to Agilent 892NX)
Serial (to Agilent 8924C)
DET OUT (to Agilent 8924C)
REF IN (from Agilent 892NX)
REF OUT
To ANT IN
650 to 940 MHz
(to Agilent 892NX)
FROM DUPLEX OUT
810 to 995 MHz
(from Agilent 892NX) RX ATTEN
TX ATTEN
SW2
SW1
Agilent 83236B
0 to 40 dB
1 dB step
1
0
1
0
Agilent 8320NX)