Local LockoutDemonstration,Example Program 2
Program Comments

10:Setup a variable to contain the HP-IB address of the source.

20:Abort any bus activity and return the HP-IB interfaces to their reset states.

30:Place the source into LOCAL to cancel’any Local Lockouts that may have been setup. 40: Reset the source’s parser and clear any pending output from the source. Prepare the source to receive new commands.

50:Place the source into REMOTE.

60:Clear the display of the computer.

70: Print a message to the computer’s display.

When the synthesizer is in REMOTE mode, all the front panel keys are disabled except the LOCAL key. But, when the LOCAL LOCKOUT command is set on the bus, even the LOCAL key is disabled. The LOCAL command, executed from the controller, is then the only way to return all (or selected) instruments to front panel control.

Continue example program 1. Delete line 90 END and type in the following commands:

90P R I N T " V e r i f y t h a t a l l k e y s a r e i g n o r e d ,

except the 'LOCAL' key."

100 PRINT "Verify that 'LOCAL' causes the REMOTE LED to go OFF."

110PRINT ' . . . . . press CONTINUE"

120PAUSE

130REMOTE Source

140LOCAL LOCKOUT 7

150PRINT

160PRINT "Source should now be in LOCAL LOCKOUT mode."

170PRINT "Verify that all keys (including 'LOCAL')

h a v e n o e f f e c t . "

180PRINT ' . . . . . press CONTINUE"

190PAUSE

200LOCAL Source

210PRINT

220PRINT "Source should now be in LOCAL mode."

230P R I N T " V e r i f y t h a t t h e s y n t h e s i z e r ' s k e y b o a r d

is f u n c t i o n a l . "

240 END

To verify and investigate the different remote modes do the following:

1.Reset the controller.

2.On the synthesizer: Press c-1.

Getting Started Programming 1-89