BNC 6040 User Manual

Page 40

OPERATING INFORMATION

Supplemental Control Commands

These commands provide additional methods for controlling the instrument. They do not directly
correspond to the keys on the 6040 front panel.

CL

Clear Instrument. This command recalls the settings in module memory
zero if a module is installed (equivalent to

RE O). With no module installed, the

mainframe is set for Single Cycle triggering (and no other parameters are changed).

;

The semicolon is used to suppress the loading of parameters into hardware.
When added to the end of a panel control command, that command is temporarily stored
in mainframe memory (not to be confused with the module memory accessed by STORE
and RECALL), but not put into effect.

The command can be activated later in a number of ways. It can be activated by
immediately following it with an

EX command or by querying that menu item some time

later and then immediately following that with

EX. For example, either the sequence TR

IN 1234; EX or TR IN 1234;...[other commands]...TR IN EX will put 1.234 kHz Internal
Triggering into effect. Additionally, a complete set of instrument parameter can be held in
mainframe memory using ; repeatedly. These could be activated in hardware as a group
with the

RL command or they could be stored in module memory (using the ST i

command) and recalled as a group when needed (using

RE i).

Execute. This command activates parameters into hardware and initiates
Single Cycle triggers. Under Single Cycle operation.

EX triggers the instrument, causing

the pulse of specified Width and Delay to be produced. If the most recent command
received by the 6040 was a parameter query (a panel control command with the
argument omitted) or a command terminated by a semicolon (to load into temporary
memory but not activate a parameter), then EX activates the menu parameter just
queried about or the parameter just loaded into memory. (In this case, if the instrument
is in Single Cycle operation, a trigger is not produced.) For example, both the command
sequences

TR IN EX and TR IN 2E3; EX select Internal Trigger operation. The second

also changes the rep rate to 2 kHz.

Reload. The RL command loads the complete set of instrument parameters
from temporary mainframe memory into hardware (see

;).