LOCAL OPERATION
4-2
Recalling default settings ................................................................................................... 4-36
Memory sequencing .................................................................................................................. 4-37
Memory write protection........................................................................................................... 4-38
Memory state summary ............................................................................................................. 4-38
Memory cloning ........................................................................................................................ 4-39
GENERAL ............................................................................................................................... 4-41
Frequency standard selection..................................................................................................... 4-41
50 Ω/75 Ω impedance selection ................................................................................................ 4-42
RF level limit............................................................................................................................. 4-43
RF level offsets.......................................................................................................................... 4-44
DCFM nulling ........................................................................................................................... 4-45
SINAD measurement (Option 12)............................................................................................. 4-46
Keyboard locking and display blanking.................................................................................... 4-49
Power-up options....................................................................................................................... 4-50
Adjusting the display................................................................................................................. 4-50
Software information................................................................................................................. 4-51
Hardware information ............................................................................................................... 4-51
Instrument options..................................................................................................................... 4-52
Protection locking and unlocking.............................................................................................. 4-52
Changing the password.............................................................................................................. 4-53
Calibration................................................................................................................................. 4-53
ERROR MESSAGES.............................................................................................................. 4-55
Error handling............................................................................................................................ 4-55
Background errors:............................................................................................................. 4-55
Foreground errors:..............................................................................................................4-55
Error message priority:....................................................................................................... 4-55
GPIB errors ........................................................................................................................ 4-56
List of tables
Table 4-1 Instrument default settings....................................................................................... 4-33
Table 4-2 Background errors (500−599) in priority order ....................................................... 4-56
Table 4-3 Foreground errors (0−399)....................................................................................... 4-57
Table 4-4 GPIB errors (400−499) ............................................................................................ 4-58
List of figures
Fig. 4-1 2025 front panel showing SUPPLY switch and connectors......................................... 4-4
Fig. 4-2 Instrument front panel showing keyboard .................................................................... 4-5
Fig. 4-3 Instrument rear panel showing connectors.................................................................... 4-7
Fig. 4-4 2023A main screen in normal operation showing default display................................ 4-9
Fig. 4-5 2023B main screen in normal operation showing default display................................ 4-9
Fig. 4-6 2025 main screen in normal operation showing default display................................. 4-10
Fig. 4-7 Division of the display into fields............................................................................... 4-11
Fig. 4-8 Step setting display showing default settings ............................................................. 4-14
Fig. 4-9 Utility group menu...................................................................................................... 4-15
Fig. 4-10 Frequency/sweep menu............................................................................................. 4-15
Fig. 4-11 Frequency standard menu......................................................................................... 4-15
Fig. 4-12 Carrier sweep parameters menu................................................................................ 4-17
Fig. 4-13 Carrier sweep mode select menu .............................................................................. 4-18
Fig. 4-14 Carrier sweep control menu...................................................................................... 4-19
Fig. 4-15 Carrier phase adjust menu......................................................................................... 4-20
Fig. 4-16 RPP tripped display ..................................................................................................4-21
Fig. 4-17 RF level linear units menu........................................................................................ 4-22
Fig. 4-18 RF level logarithmic units menu............................................................................... 4-22
Fig. 4-19 Modulation mode menu − first page......................................................................... 4-23
Fig. 4-20 Modulation mode menu − second page .................................................................... 4-23
Fig. 4-21 Modulation source menu........................................................................................... 4-24