Filter
Top Products
III
5.2 Measuring the 1-signal Selectivity ................................................................................... 5-4
5.2.1 Measuring selectivity characteristics of the FM receiver in 20 dB
NQ method ....................................................................................................... 5-4
5.2.2 Measuring spurious response ........................................................................... 5-7
5.3 Measuring the 2-signal Sensitivity ................................................................................... 5-9
5.3.1 Measuring the sensitivity blocking of the FM receiver ................................... 5-9
5.3.2 Measuring the cross-modulation characteristics ............................................ 5-12
SECTION 6 GPIB...................................................................................................... 6-1
6.1 Outline of GPIB ................................................................................................................ 6-1
6.1.1 Overview .......................................................................................................... 6-1
6.1.2 GPIB functions ................................................................................................. 6-1
6.1.3 Setup example .................................................................................................. 6-2
6.1.4 Standard ........................................................................................................... 6-3
6.2 Device Message List ......................................................................................................... 6-4
6.2.1 Outline .............................................................................................................. 6-4
6.2.2 General Information On SCPI.......................................................................... 6-4
6.2.3 Command Structure ......................................................................................... 6-4
6.2.4 Writing Commands .......................................................................................... 6-5
6.2.5 Compounding Commands................................................................................ 6-6
6.2.6 Parameter ......................................................................................................... 6-7
6.2.7 Unit................................................................................................................... 6-7
6.2.8 Command Tree ................................................................................................. 6-8
6.3 Connecting the GPIB Cable ........................................................................................... 6-14
6.4 Device Message Format ................................................................................................. 6-15
6.4.1 Program message format ................................................................................ 6-15
6.4.2 Response message format .............................................................................. 6-18
6.5 Status Message ............................................................................................................... 6-20
6.5.1 Status register configuration .......................................................................... 6-20
6.5.2 IEEE488.2-based status register .................................................................... 6-21
6.5.3 SCPI standard status register.......................................................................... 6-22
6.5.4 Reading, writing, clearing, and resetting the status register .......................... 6-23
6.5.5 SCPI error messages ...................................................................................... 6-25
6.6 Initializing Device .......................................................................................................... 6-27
6.6.1 Bus initialization ............................................................................................ 6-27
6.6.2 Message initialization .................................................................................... 6-27
6.6.3 Device initialization ....................................................................................... 6-27
6.6.4 Device state at power-on ................................................................................ 6-27
6.7 Detailed Description of Commands ............................................................................... 6-28
6.7.1 Frequency subsystem ..................................................................................... 6-28
6.7.2 Output level subsystem .................................................................................. 6-32
6.7.3 AM subsystem................................................................................................ 6-38
6.7.4 FM subsystem ................................................................................................ 6-39
6.7.5 PM subsystem ................................................................................................ 6-41