Hello Ton: Thanks for your reply. I tried to send 0x040A to HP5386, but I did not receive any response. I pressed RESET button when I got "52" error message, the error message disappeared and frequency reading displayed in the receive buffer area of my Serial port Assitant software.
Hui At 2012-06-18 15:29:07,Ton <t...@mubo.nl> wrote: >Hello Hui, > >I found that I needed: >Ag488Wrap.ibeos(devDesc, 0x040A); // 04 = terminate read when 0A = /n is >detected >as part of the initialization. Without this, the communication with my >5384A timed out. > >Also, see what happens when you press the reset button when you get >error 52 while you continue to loop on ibread with a timer. > >Best regards, >Ton > > >On 17-Jun-12 17:45, Michael Blazer wrote: >> Hui, >> The older instruments have a very simple command structure. You don't >> need the "?" to query. Typically just doing a GPIB Read command >> (ibread for NI controllers) will address the counter to output and it >> will send the current reading. This can cause a problem if you request >> data too soon after a setup command. You'll get the previous reading. >> The "ENTER S ; N$" command just reads from address "S" into the >> variable "N$". >> It sound like you need the command to your USB-GPIB controller to get >> it to read. The counter is probably ready to send the data, the >> controller just needs to initiate its read cycle. >> >> Mike >> >> On 6/17/2012 10:17 AM, Hui Zhang wrote: >>> I have a old HP5386A counter and a OEM USB-GPIB controller(no tech >>> support), I use a serial port debug program to send command via >>> USB-GPIB to HP5386A, when I send "FU2"(Measure period) or >>> "DI"(increment display digis), the 5386 response the command and >>> worked well, the other control command in the HP's manual also worked >>> well. >>> >>> >>> But I don't know how to read the measure value from 5385A, in my >>> HP3478A mutilmeter case, I just send a "?", it will return voltage >>> value to software, but at 5386A, the “?” not work, I got error >>> message "52" on LCD panel. >>> >>> >>> I read the HP5386's manual, the demonstrates used "ENTER" command to >>> get measure value, but the "ENTER" is a HP-BASIC command of vintage >>> HP-85 computer. I don't know how to send similar command to control >>> my counter, can someone give me some advice? Thank you! >>> >>> >>> Hui >>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >> >> >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > > > >_______________________________________________ >time-nuts mailing list -- time-nuts@febo.com >To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.