Hui,
It sounds like the issue is with your OEM GPIB controller. Why don't you
post some pictures of it and see if any of the Time Nuts can identify
it? It probably is a generic version of some common interface.
Mike
On 6/18/2012 8:43 AM, Hui Zhang wrote:
Hello Mike:
Many thanks for useful information. The problem is I have no more information of my USB-GPIB controller,
so I don't know any command of this device. I used stupid way to send my command, if I want send
"DI" to increase the display digis, I will convert "DI" to HEX code, it's 0x44 and 0x49.
I add 0x36 (0x36 is HP5386's address) and 0x0A in the begin and end of my command sequence separately. So my
command looks like "0x3644490A0D", the command was worked.
but I don't know what command can set my counter to "talk" status, I am also
confused on how to "initiate its read cycle".
Hui
At 2012-06-17 23:45:07,"Michael Blazer" <mbla...@satx.rr.com> 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
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