CG635 Remote Programming
36
CG635 Synthesized Clock Generator
Interface Commands
*IDN? Identification
String
Query the instrument identification string.
Example
*IDN?<CR>
Returns a string similar to ‘Stanford Research
Systems,CG635,s/n004025,ver0.01’
*OPC(?) Operation
Complete
The set form sets the OPC flag in the ESR register when all prior commands
have completed. The query form returns ‘1’ when all prior commands have
completed, but does not affect the ESR register.
*RCL i
Recall Instrument Settings
Recall instrument settings from location i. The parameter i may range from
0 to 10. Locations 0 to 9 are for arbitrary use. Location 10 is reserved for the
instrument’s current settings. This location is automatically updated 60 seconds
after the user presses any key that modifies the current state of the instrument.
The following settings are recalled:
1. Current frequency and frequency step size.
2. Current phase and phase step size.
3. Q / Q
¯ high and low levels and step sizes.
4. CMOS high and low levels and step sizes.
5. Current display selection.
6. PRBS on/off state
7. Run/stop state
8. Stop level
The display will be turned on when settings are recalled.
Example
*RCL 3<CR>
Recall instruments settings from location 3.
*RST
Reset the Instrument
Reset the instrument to default settings. This is equivalent to pressing the keys
‘SHIFT’, ‘INIT’, ‘Hz’ on the front panel. The factory default settings are listed in
Table 15. . The remote interface, GPIB address, and power-on status clear are not
affected by this command, however.
Example
*RST<CR>
Resets the instrument to default settings
*SAV i
Save Instrument Settings
Save instrument settings to location i. The parameter i may range from 0 to 10.
Locations 0 to 9 are for arbitrary use. Location 10 is reserved for the instrument’s
current settings. This location is automatically updated ten seconds after the user
presses any key that modifies the current state of the instrument. The following
settings are saved:
1. Current frequency and frequency step size.
2. Current phase and phase step size.
