Setting the Device Address

The GPIB address (primary address) of the instrument is factory-set to 20. It can be changed manually via the Primary Address softkey in the Setup - Remote menu or via GPIB bus. For remote control, addresses 0 through 30 are permissible.

In addition to the primary address, up to 30 secondary addresses can be assigned to the individual function groups and test modes. This concept of extended addressing allows the same remote commands to be used in several function groups and modes. Secondary address 0 is reserved for the CMU base system. The other secondary addresses are set via the Second. Address softkey in the Setup - Remote menu or via remote control.

Note:
In the Setup – Remote menu, secondary addresses between 1 and 29 can be assigned. When using the National Instruments driver, add 96 to the secondary address. For example, specify a secondary address of 96 to access secondary address 0 on the instrument.

Changing the addresses manually:

• Call Setup - Remote menu.
• Press Primary Address softkey. Enter desired address in the input field.
• Press Second. Address softkey. Use the rotary knob to select the list line with the desired address (numbers 1 to 29). Press ENTER to edit the line. From the popup window select the desired function group (use the rotary knob to change between the entries in the popup window). Confirm your selection and close the popup window using the ENTER key.
• Press the ESCAPE key to close the Setup - Remote menu.

Via GPIB bus interface:

• Use the SYSTem:REMote:ADDRess:PRIMary <Addr_1> command to define the GPIB bus address of the CMU.
• Use the SYSTem:REMote:ADDRess:SECondary <Addr_2>,"<Fgroup>" command to assign distinct secondary addresses to all function groups needed. The secondary address is transferred with each command (physical/hardware addressing, see program example in Introduction - Program Examples). Alternatively, software switchover with a command preceded by a secondary address and a semicolon is possible:

<Addr_2>;<Command> (logical addressing of secondary address; use semicolon)

Via RS-232 interface:

• Use the SYSTem:REMote:ADDRess:PRIMary <Addr_1> command to define the GPIB bus address of the CMU.
• Use the SYSTem:REMote:ADDRess:SECondary <Addr_2>,"<Fgroup>" command to assign distinct secondary addresses to all function groups needed.
• Use the *SEC <Addr_2> command for a software switchover from one secondary address to another. Alternatively place <Addr_2>; in front of the command:

*SEC <Addr_2> followed by <Command> is equivalent to <Addr_2>;<Command>, provided that secondary address <Addr_2> has been appropriately defined.