Difference between Rohde & Schwarz RTM3k-COM4 and RTA4k-COM4? - Page 1
Forum section: electronics / testgear

author: egonotto
author_rank: Super Contributor
timestamp: May 22, 2019, 03:03:51 am
content: Hallo,what are the difference between RTM3k-COM4 and RTA4k-COM4?So far I only found 6 distinction.1. The timebase accuracy:For RTM3k-COM4:After delivery/calibration, at +23 °C ±2.5 ppmDuring calibration interval ±3.5 ppmFor RTA4k-COM4:After delivery/calibration, at +23 °C ±0.5 ppmDuring calibration interval ±1.0 ppm2. The memory:For RTM3k-COM4:40 Msample/(logic) channel200 Msample in segmentedmemory mode/(logic) channelFor RTA4k-COM4:100 Msample/(logic) channel500 Msample in segmented memorymode/(logic) channel3. DC gain accuracy4. Counter: 6 vs 7 Digit5. The cost.6. The name.Best regardsegonotto

author: JxR
author_rank: Unknown
timestamp: May 22, 2019, 03:24:18 am
content: Brochure and datasheet for RTM3000:https://scdn.rohde-schwarz.com/ur/pws/dl_downloads/dl_common_library/dl_brochures_and_datasheets/pdf_1/RTM3000_bro_en_5214-9144-12_v0600.pdfhttps://scdn.rohde-schwarz.com/ur/pws/dl_downloads/dl_common_library/dl_brochures_and_datasheets/pdf_1/RTM3000_dat_en_5214-9144-32_v0600.pdfBrochure and datasheet for the RTA4000https://scdn.rohde-schwarz.com/ur/pws/dl_downloads/dl_common_library/dl_brochures_and_datasheets/pdf_1/RTA4000_bro_en_5215-1776-12_v0500.pdfhttps://scdn.rohde-schwarz.com/ur/pws/dl_downloads/dl_common_library/dl_brochures_and_datasheets/pdf_1/RTA4000_dat_en_5215-1776-32_v0500.pdfThese should contain all your answers. The brochures do some side by side comparison charts between the different models as well.

author: egonotto
author_rank: Super Contributor
timestamp: May 22, 2019, 03:59:40 am
content: Hallo,thanks. I read the paper already and find the stated differences.I want to know whether it exists more differences.Best regardsegonotto

author: maginnovision
author_rank: Super Contributor
timestamp: May 22, 2019, 04:12:21 am
content: I thought the RTA had a lower noise floor but I can't remember where I found that. Considering the COM4 deal difference is only 2k, I think the listed items are probably about right.

author: JxR
author_rank: Unknown
timestamp: May 22, 2019, 04:55:12 am
content: Quote from: egonotto on May 22, 2019, 03:59:40 amI would just contact R&S and ask them. There may be no one here that actually has a RTA4000. One would have to be very familiar with both devices to know what undocumented differences there are between them, if such things exist. There really is no reason to assume R&S is trying to hide the specifications of either device. I would assume the memory specifications are the main difference, and reason for the different price points.You could try reading the firmware notes also. Its possible that there are firmware differences between them, depending on the update cycle.

author: YetAnotherTechie
author_rank: Regular Contributor
timestamp: May 22, 2019, 07:49:38 pm
content: Quote from: maginnovision onYesterdayat 02:12:21 pmIt´s here:https://www.eevblog.com/forum/testgear/rs-rtm3004-the-swiss-knife-oscilloscope/50/?action=post;quote=1408345;last_msg=2412399

author: egonotto
author_rank: Super Contributor
timestamp: July 19, 2019, 06:24:57 pm
content: Hello,now i found another difference.The probes in the RTM3k are R&S RT-ZP05 but the probes in RTA3k are R&S RT-ZP10The probes R&S RT-ZP10 come without BNC Adapter. Why?Best regardsegonotto