Difference between revisions of "EE Electronics ESLA201A"
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[[File:Esla201a. | {{Infobox logic analyzer | ||
| image = [[File:Esla201a.png|180px]] | |||
| name = EE Electronics ESLA201A | |||
| status = supported | |||
| source_code_dir = fx2lafw | |||
| channels = 8 + 1 | |||
| samplerate = 8ch @ 24MHz, 8+1ch @ 12MHz | |||
| samplerate_state = — | |||
| triggers = none (SW-only) | |||
| voltages = max. 5.5V | |||
| threshold = Fixed: V<sub>IH</sub>=1.4V, V<sub>IL</sub>=0.8V | |||
| memory = none | |||
| compression = none | |||
| price = $35 - $45 | |||
| website = [https://web.archive.org/web/20110213013236/http://eeelec.com/xla/ eeelec.com] | |||
}} | |||
The | The '''EE Electronics ESLA201A''' a USB-based, 8-channel logic analyzer with up to 24MHz sampling rate, with 1 additional analog channel (theoretically 2, but only one of them can be used at a time; 3MHz analog bandwidth). | ||
It is a clone of the [[CWAV USBee AX-Pro]]. | It is a clone of the [[CWAV USBee AX-Pro]]. | ||
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In sigrok, we use the open-source [[fx2lafw]] firmware for this logic analyzer. | In sigrok, we use the open-source [[fx2lafw]] firmware for this logic analyzer. | ||
See [[EE Electronics ESLA201A/Info]] for more | '''Note''': [[fx2lafw]] currently doesn't support switching between the two possible analog channels, 1ACH (TODO: not verified on hardware) will be used unconditionally. | ||
See [[EE Electronics ESLA201A/Info]] for some more details (such as '''lsusb -vvv''' output) on the device. | |||
== Hardware == | == Hardware == | ||
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* ON Semiconductor MC33078 — [http://www.onsemi.com/PowerSolutions/product.do?id=MC33078 Low Noise Dual Op-Amp] | * ON Semiconductor MC33078 — [http://www.onsemi.com/PowerSolutions/product.do?id=MC33078 Low Noise Dual Op-Amp] | ||
* Maxim ICL7660 — [http://datasheets.maxim-ic.com/en/ds/ICL7660-MAX1044.pdf Switched Capacitor Voltage Converter] | * Maxim ICL7660 — [http://datasheets.maxim-ic.com/en/ds/ICL7660-MAX1044.pdf Switched Capacitor Voltage Converter] | ||
'''Analog frontend:''' | |||
[[File:ESLA201A_Analog.svg]] | |||
== Photos == | |||
<gallery> | |||
File:Esla201a.JPG|<small>Device, top</small> | |||
File:Esla201a-pcb.jpg|<small>PCB, top/bottom</small> | |||
</gallery> | |||
== Protocol == | == Protocol == | ||
Since we use the open-source [[fx2lafw]] firmware for this device, we don't need to know the protocol. | |||
The USBee AX software controls the unit through a combination of command messages, and firmware patched for sample rates etc. downloaded before each capture. For this reason we have abandoned efforts to decode the protocol, and are working instead on [[fx2lafw]] — a replacement open source firmware for the device. | The USBee AX software controls the unit through a combination of command messages, and firmware patched for sample rates etc. downloaded before each capture. For this reason we have abandoned efforts to decode the protocol, and are working instead on [[fx2lafw]] — a replacement open source firmware for the device. | ||
== Resources == | |||
* [http://stores.ebay.com/eeelec Eeelec eBay store] and [http://store.eeelec.com/ Eeelec webshop] | |||
[[ | * [https://web.archive.org/web/20110213013236/http://eeelec.com/xla/ Eeelec: Software download location] | ||
[[Category:Device]] | [[Category:Device]] | ||
| Line 32: | Line 62: | ||
[[Category:Oscilloscope]] | [[Category:Oscilloscope]] | ||
[[Category:Mixed-signal oscilloscope]] | [[Category:Mixed-signal oscilloscope]] | ||
[[Category:Supported]] | |||
Latest revision as of 15:01, 30 June 2019
 | |
| Status | supported |
|---|---|
| Source code | fx2lafw |
| Channels | 8 + 1 |
| Samplerate | 8ch @ 24MHz, 8+1ch @ 12MHz |
| Samplerate (state) | — |
| Triggers | none (SW-only) |
| Min/max voltage | max. 5.5V |
| Threshold voltage | Fixed: VIH=1.4V, VIL=0.8V |
| Memory | none |
| Compression | none |
| Price range | $35 - $45 |
| Website | eeelec.com |
The EE Electronics ESLA201A a USB-based, 8-channel logic analyzer with up to 24MHz sampling rate, with 1 additional analog channel (theoretically 2, but only one of them can be used at a time; 3MHz analog bandwidth).
It is a clone of the CWAV USBee AX-Pro.
In sigrok, we use the open-source fx2lafw firmware for this logic analyzer.
Note: fx2lafw currently doesn't support switching between the two possible analog channels, 1ACH (TODO: not verified on hardware) will be used unconditionally.
See EE Electronics ESLA201A/Info for some more details (such as lsusb -vvv output) on the device.
Hardware
- Cypress CY7C68013A — FX2 chip, 56 pins
- Atmel ATMLH113 — I2C EEPROM
- Texas Instruments TLC5510I — 8-bit ADC
- NXP 74HC4051D — 8-channel analog switch
- National LM358 — Low Power Dual Op-Amp
- ON Semiconductor MC33078 — Low Noise Dual Op-Amp
- Maxim ICL7660 — Switched Capacitor Voltage Converter
Analog frontend:
Photos
Device, top
PCB, top/bottom
Protocol
Since we use the open-source fx2lafw firmware for this device, we don't need to know the protocol.
The USBee AX software controls the unit through a combination of command messages, and firmware patched for sample rates etc. downloaded before each capture. For this reason we have abandoned efforts to decode the protocol, and are working instead on fx2lafw — a replacement open source firmware for the device.