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Information on 37203A HP-IB Extenders

leedytom All Messages By This Member #135 I've recently tried to use a pair of old 37203A HP-IB Extenders to extend the distance of several IEEE-488 instruments from the controller.? I don't have a manual on hand, but I thought the units should be fairly straightforward to use.? I set the "controller end" as Master and the "instrument end" of the link as "Slave," the rates at the same setting (Normal), and connected the power and -488 instruments.? Although I can see a series of negative-going pulses on the coaxial interconnecting cable, I can't seem to get communications between the controller and the instruments.? The length of the cable is about 150 meters. Can anyone give me any guidance for their operation?? There are a few "mystery switches" inside the units along with a jumper printed wiring board -- I left all these as they were.? Any help would be sincerely appreciated. Regards -- Tom Leedy
Greyhawk #136 开云体育 If I Recall, The Maximum Cable Length For HP-1B ?Was 20 Meters. Perhaps Someone Else Knows For Sure. ? Greyhawk toggle quoted message Show quoted text ----- Original Message ----- From: leedyt@... To: hp_agilent_equipment@... Sent: Wednesday, January 14, 2004 17:35 Subject: [hp_agilent_equipment] Information on 37203A HP-IB Extenders I've recently tried to use a pair of old 37203A HP-IB Extenders to extend the distance of several IEEE-488 instruments from the controller.? I don't have a manual on hand, but I thought the units should be fairly straightforward to use.? I set the "controller end" as Master and the "instrument end" of the link as "Slave," the rates at the same setting (Normal), and connected the power and -488 instruments.? Although I can see a series of negative-going pulses on the coaxial interconnecting cable, I can't seem to get communications between the controller and the instruments.? The length of the cable is about 150 meters. Can anyone give me any guidance for their operation?? There are a few "mystery switches" inside the units along with a jumper printed wiring board -- I left all these as they were.? Any help would be sincerely appreciated. Regards -- Tom Leedy `Yahoo! Groups Links To visit your group on the web, go to: ? To unsubscribe from this group, send an email to: hp_agilent_equipment-unsubscribe@... ? Your use of Yahoo! Groups is subject to the .`
Mark KAHRS #137 Well, looking at this here manual, there is a RUN/TEST switch (A1S1). The test switch is A1S2 ( 6 pin DIP sw) . You need to set the COAX/OPT switch (A1s5) TO coax... finally, you have to set the rate. The test switches A1S2 should be in the OFF position BTW. What else?

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