Instruction manual
100
The communication session was interrupted before it was finished (no 
terminator was sent). 
Err -410: Query interrupted 
A command was received before the response to the previous interrogative 
command was sent. 
Err -420: Query unterminated 
The power supply was addressed to talk (to send data over the interface), but it 
didn’t previously receive a command which sends data to the output buffer (an 
interrogative command). 
Err 510: Command allowed only in RS232 
system:remote command was sent, when GPIB interface selected. 
Self Test Errors 
Self test errors are user defined. They are generated after power up. 
Here are self test errors generated by the power supply: 
Error 601: Front panel does not respond 
Error 602: CV not high 
Error 603: CV not low 
Error 604: CC not high 
Error 605: CC not low 
Error 606: OVP not high 
Error 607: OVP not low 
Error 608: Fan test failed 
Error 609: Unable to sense line frequency 
If one of the errors above is generated, the power supply must be turned off and 
then turned on. If one of these errors is generated again, the power supply must 
be delivered to B&K Precision for service.  










