NAT9914 - Direct connection to GPIB bus

[WH-Tan]

Hello,

I am doing some experiment with NAT9914xx.  I understood from various sources that this ASIC is connected to the GPIB bus through some transceiver ICs, i.e. TI's SN75ALS160 and SN75ALS162.  Whilst I'm waiting for the part, I wish I can carry out some testings.

So here is the question: If the only devices exist on a GPIB bus is my testing board and a GPIB capable equipment, can I have the NAT9914 on my testing board connected directly to GPIB bus without using the transceivers?

Thanks & best regards,

WH Tan

Message Edited by WH-Tan on 04-23-2009 12:23 PM

[Steven_T · Accepted solution]

Hello,

These transceivers are absolutely necessary when communicating with GPIB instruments.  That is why they are in the hardware section of the 9914 manual.  The transceivers will output the correct voltages/line transitions.  Without them, there will be errors in communication.

I hope this helps,

Steven T.

[WH-Tan]

Steven,

Thank you very much. I appreciate your reply.

Besr regards,