Difference between revisions of "HT USBee-AxPro"

**HT USBee-AxPro**
Status	supported
Source code	fx2lafw
Channels	8 + 1
Samplerate	8ch @ 24MHz, 8+1ch @ 12MHz
Samplerate (state)	—
Triggers	none (SW-only)
Min/max voltage	Digital: -1V — +6V; Analog: ±10V (±20V max)
Threshold voltage	Fixed: VIH=1.6V, VIL=1.4V
Memory	none
Compression	none
Website	aliexpress.com

Revision as of 23:47, 17 September 2017

The HT USBee-AxPro is a USB-based, 8-channel logic analyzer with up to 24MHz sampling rate, with 1 additional analog channel (3MHz analog bandwidth).

It is able to switch between USBee AX-Pro, Salea Logic and Altera USB blaster mode via a button. When pressing the button the USB VID/PID changes.

It is a clone of the CWAV USBee AX-Pro.

In sigrok, we use the open-source fx2lafw firmware for this logic analyzer.

See HT USBee-AxPro/Info for some more details (such as lsusb -v output) on the device.

Hardware

HT2013 V5.00:

Main chip: Cypress CY7C68013A-56SSOP (FX2LP)
64Kbit I²C EEPROM: Microchip 24LC641
2Kbit I²C EEPROM: Microchip 24LC02B
Auxiliary 8051 chip: ST STM8S003F3 (used for handling the button)
Supply voltage regulator: Advanced Monolithic Systems AMS1117-3.3
Analog-to-digital converter: Texas Instruments TLC5510I
Analog input amplifiers: Analog Devices AD8065 (SMD marking "HRA")
Analog amplifiers negative supply: Intersil ICL7660 (7660 AIBAZ V120428A)
Crystal: 24MHz

FX2LP pin mappings

#	Pin	Destination	Remark
	CTL2	ADC_CLK	ADC clock
	PD0..7	ADC_D1..8	ADC data output

Analog frontend

Schematics:

Notes:

Some devices have R2 = 66.5Ω (instead of 66.5kΩ), this basically limits the range to -3.3V — +3.3V.
TLC5510 is used with ~3.3V "reference" from LDO output which is both out of the allowed range and is a major source of inaccuracy.
Some devices (probably those that do not have U5 populated) produce bogus min and max spikes when measuring certain voltages, this can probably be remedied by adding small (on the order of 10s pF) capacitance to U5 Vcc and GND pins or to the ADC CLK line.

HT_V6.0:

...

Pin mappings

The FX2 CTL2 and PD0..7 pins are mapped exactly like the HT2013 V5.00 version. The TLC5510I OE# pin is tied to GND.

Photos

HT2013 V5.00:

Device package
Case, front
Device
PCB, front
PCB, front
PCB, front
PCB, back
TLC5510I
STM8 1
STM8 2
Probe adaptor
FX2
Expansion board
AMS1117
7660
24LC64
24LC02B
Version without signal generator
Version without signal generator case

HT2013 V5.00 (no blue button PCB):

Package contents
Device, top
Device, bottom
Connector
USB
Analog connector, top
Analog connector, bottom
Button connector
PCB, top
PCB, bottom
Cypress FX2
ST STM8S003F3
Microchip 24LC64I
Microchip 24LC02BI
Intersil ICL7660
TI TLC5510I
AMS1117-3.3

HT_V6.0:

Package contents
Device, top
Device, bottom
Connector
USB
Analog adapter, top
Analog adapter, bottom
PCB, top
PCB, bottom
Cypress FX2
Microchip 24LC02B
TI TLC5510I
Intersil ICL7660S
AMS1117-3.3
HRA
24MHz crystal

Protocol

Since we use the open-source fx2lafw firmware for this device, we don't need to know the protocol.

Resources

@@ Line 1: / Line 1: @@
 {{Infobox logic analyzer
-| image            = [[File:Ht-usbee-axpro.png|180px]]
+| image            = [[File:Ht usbee axpro v5 mugshot.png|180px]]
 | name             = HT USBee-AxPro
 | status           = supported
 | source_code_dir  = fx2lafw
 | channels         = 8 + 1
-| samplerate       = 24MHz
+| samplerate       = 8ch @ 24MHz, 8+1ch @ 12MHz
 | samplerate_state = &mdash;
 | triggers         = none (SW-only)
@@ Line 15: / Line 15: @@
 }}
-The '''HT USBee-AxPro''' is a USB-based, 8-channel logic analyzer with up to 24MHz sampling rate, with 1 additional analog channel.
+The '''HT USBee-AxPro''' is a USB-based, 8-channel logic analyzer with up to 24MHz sampling rate, with 1 additional analog channel (3MHz analog bandwidth).
 It is able to switch between USBee AX-Pro, Salea Logic and Altera USB blaster mode via a button. When pressing the button the USB VID/PID changes.
@@ Line 52: / Line 52: @@
 === Analog frontend ===
-[http://sigrok.org/wiki/File:Ht-usbee-axpro_analog_schematics.svg Schematics]
+'''Schematics''':
-Notes:
+[[File:Ht-usbee-axpro analog schematics.svg|500px]]
-* Some devices have R2 = 66.5 Ohms instead of kiloohms, this basically limits the range to -3.3V &mdash; +3.3V
-* TLC5510 is used with ~3.3V "reference" from LDO output which is both out of the allowed range and is a major source of inaccuracy
+'''Notes''':
-* Some devices (probably those that do not have U5 populated) produce bogus min and max spikes when measuring certain voltages, this can probably be remedied by adding small (on the order of 10s pF) capacitance to U5 Vcc and GND pins or to the ADC CLK line
-* This board was apparently designed by people lacking EE knowledge, do not expect much from it
+* Some devices have R2 = 66.5Ω (instead of 66.5kΩ), this basically limits the range to -3.3V &mdash; +3.3V.
+* TLC5510 is used with ~3.3V "reference" from LDO output which is both out of the allowed range and is a major source of inaccuracy.
+* Some devices (probably those that do not have U5 populated) produce bogus min and max spikes when measuring certain voltages, this can probably be remedied by adding small (on the order of 10s pF) capacitance to U5 Vcc and GND pins or to the ADC CLK line.
 '''HT_V6.0''':
@@ Line 90: / Line 92: @@
 File:24LC64.jpg |<small>24LC64</small>
 File:24LC02B.jpg |<small>24LC02B</small>
+File:Ht-usbee-axpro_no_siggen_pcb.jpg |<small>Version without signal generator</small>
+File:Ht-usbee-axpro_no_siggen_case.jpg |<small>Version without signal generator case</small>
 </gallery>

Difference between revisions of "HT USBee-AxPro"

Revision as of 23:47, 17 September 2017

Contents