Keysight 34450A RS-232 - Page 1
Forum section: electronics / testgear

author: seedkey
author_rank: Contributor
timestamp: December 06, 2022, 07:26:58 pm
content: Hi Guys,I am trying to get rs-232 output from multimeter 34450A and not having any luck .I have it enabled on front panel utility panel , Do i need to query it or should it just appear on my terminal program (teraterm)Baudrate is configured to 9600 baud 8N1. Have tested port in teraterm with another device so i know teraterm is working .Any suggestions?Thanks

author: coromonadalix
author_rank: Super Contributor
timestamp: December 07, 2022, 01:25:03 am
content: have you followed this from Keysight:https://edadocs.software.keysight.com/kkbopen/how-can-i-set-up-rs-232-connection-on-34450a-dmm-614506321.htmlMaybe you need an null modem cable or the drs dtr crossover ?OrTie the DSR pin (pin 6) on the RS-232 connector high like the 34401A

author: seedkey
author_rank: Contributor
timestamp: December 07, 2022, 05:48:11 am
content: Yes I did follow that. But still no data through the port. I just thought I was missing something in setup.I reached out to Keysight but no response from them.I scoped the output lines RX and TX but nothing.Do you suppose that RS232 is an option for this meter?

author: coromonadalix
author_rank: Super Contributor
timestamp: December 07, 2022, 11:23:21 am
content: I dont know this meter, i'm not sure if it has a talk option like the 34401aTalk means, it will output the measured values only, no controls over rs232In the user manual, they just say cross the TX and RX pins between the meter and pc, and the meter configurations settingsDo you use an USB to rs232 adapter ?You could connect it with the usb cable, you need usbtmc drivers or the keysight software .... if you want to control it, use old i/o library suite for the dmm connectivity softwareIOLibSuite_17_1_19313.exeDMM_Connectivity_Utility_1.0.2.0.exeThey support my 34410a ... should do okay for the 34450a

author: seedkey
author_rank: Contributor
timestamp: December 07, 2022, 02:49:32 pm
content: no, i do not want to control it ,Just want it to stream rs232 dataI have attached a pic of my wiring.Its a new meter got it a couple months ago as a backup to an older HP 34401A. Part of a calibration fixture, so as one meter is sent out for cal, we can swap this new one in.

author: coromonadalix
author_rank: Super Contributor
timestamp: December 07, 2022, 03:10:05 pm
content: just found this ??QuestionHow to Configure 34450A RS-232 Link?AnswerAn additional step to do before enabling the RS232 is to disable the USB connection, otherwise even by saving the parameter you will return to the USB setting by defaulthttps://edadocs.software.keysight.com/kkbopen/how-can-i-set-up-rs-232-connection-on-34450a-dmm-614506321.htmlother infos or trickshttps://xdevs.com/doc/HP_Agilent_Keysight/English%20_%202013-01-18%20_%20PDF%20302%20KB%205991-1518EN%20%5B7%5D.pdf

author: seedkey
author_rank: Contributor
timestamp: December 07, 2022, 03:20:59 pm
content: Thank you for those documents.Keysight finally reached out to me so we will see what help they can provide.I will update with when I know more.

author: seedkey
author_rank: Contributor
timestamp: December 16, 2022, 09:43:22 pm
content: Still no satisfaction from Keysight.They said PC's usually do not come with RS-232 ports anymore.I have replied and asked again if the RS-232 port works on this multimeter.