GPIB data errors
Hi, I'm trying to get data from a GOODWILL PPT-3615 power supply.
I can send it commands okay, and it responds, but always with missing or duplicate characters. For instance if I ask for its identification info with *IDN? I get: GOOODWILL PPT33615 GODWIILPPTT36615 and so on. The GPIB cable is only one foot long. The card works fine with a HP 3478 meter. Any ideas? Thanks, |
GPIB data errors
Ancient_Hacker wrote in message
... Hi, I'm trying to get data from a GOODWILL PPT-3615 power supply. I can send it commands okay, and it responds, but always with missing or duplicate characters. For instance if I ask for its identification info with *IDN? I get: GOOODWILL PPT33615 GODWIILPPTT36615 and so on. The GPIB cable is only one foot long. The card works fine with a HP 3478 meter. Any ideas? Thanks, Baud rate slipped due to dodgey DIP switch ? -- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on http://home.graffiti.net/diverse:graffiti.net/ |
GPIB data errors
,
Baud rate slipped due to dodgey DIP switch ? GPIB has many faults, but baud rate mismatch is not one of them. It's a parallel data with a complex handshake kind of protocol. There may be a timing problem with the GPIB master card I'm using. Gotta get out the logic analyzer to figure it out. Almost easier to buy a better card.... |
GPIB data errors
N Cook wrote:
Ancient_Hacker wrote in message ... Hi, I'm trying to get data from a GOODWILL PPT-3615 power supply. I can send it commands okay, and it responds, but always with missing or duplicate characters. For instance if I ask for its identification info with *IDN? I get: GOOODWILL PPT33615 GODWIILPPTT36615 and so on. The GPIB cable is only one foot long. The card works fine with a HP 3478 meter. Any ideas? Thanks, Baud rate slipped due to dodgey DIP switch ? -- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on http://home.graffiti.net/diverse:graffiti.net/ Or maybe the new computer is to fast for the GPIB?? |
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