Development Tools

Invaluable Tools for the Embedded Engineer

EE1202 USB Breakout Adapter for EE203

EE1202 USB Breakout Board for use with EE1202 EE1202 in system

The ee1202 is a USB breakout adapter for the EE203 Real-Time Current Monitor that makes measuring the current draw of any USB device a breeze. No more patch cables or cutting up USB cables to separate out the power and signal lines, just a nice clean USB-in / USB-out connection using standard cables.Signal integrity is maintained and the full capability of the RTCM is available to analyze and characterize your USB device.

Connecting the Breakout

Slide the breakout over the SUPPLY and DUT terminals on the RTCM. Connect a cable from your PC to the mini-B connector, and connect the DUT to a cable from the USB-A connector.  All signals are passed directly between the connectors, except for VBUS which is routed through the RTCM.

Alternative Connections

If you are analyzing a device that only requires USB power and not necessarily a protocol connection to a host, then you can connect a wall-wart charger to the mini-B connector, or leave the mini-B connector open and connect a power supply to the RTCM SUPPLY terminal. This allows you to vary the supply voltage to the DUT.

Grounding

The USB ground routed through the breakout must be connected to the RTCM ground. Normally these grounds will be tied together through their common connection to your PC's USB ports. However, if you are using a floating supply, like a wall wart or a power supply, then use the GND test point on the breakout to connect all the grounds together.

Noise

USB is a noisy environment. At very low currents noise can obsure the true current level. For a cleaner signal disconnect the USB cable from the PC and power the DUT from a power supply. Activity from other devices on the USB may also affect the apparent current consumption of the DUT.

Example

Below is a current waveform of a WiFi IoT node. It wakes up from sleep, connects to a server, then goes back to sleep. The sleep current of around 10 uA is obscured by noise. Disconnecting the cable from the PC and connecting a power supply to the SUPPLY terminal of the RTCM eliminates the noise and the current consumption can be seen clearly.

 

Whether you are characterizing a custom USB device, or attempting to understand the power behavior of a third-party device, the ee1202 USB breakout adapter is a valuable and useful addition to the EE203 RTCM.

$19.95

EE1205 Precision Current Source

EE1205 Precision Current Source EE1205 Precision Current Source shown with EE203 Real Time Current Monitor

The EE1205 self-powered Precision Current Source attaches easily to the EE203 Real-Time Current Monitor to verify measurements or can be used as a sanity check when you are not seeing the results you expect. It provides currents of 100 mA, 10 mA, 1 mA, 100 uA, 10 uA, and 3.16 uA. It is powered from the source voltage of between 3.5V and 6.5V volts and does not require a separate power supply. Currents are accurate to within +/- 2%. The current source will run at voltages below 3.0V if it is first started at a higher voltage.

When measured on the RTCM the logarithmic current values are 1.00V, 2.00V, 3.00V, 4.00V, 5.00V, and 5.50V.

Although it is designed to attach to the RTCM terminals, there are also holes which are large enough to accept a grabber clip so it can be hooked up for other uses. For example you can use it to test an LED without having to worry about the correct voltage and resistor values.

$19.95

Non-Slip Probe Tips

Non-slip probe tips in use

Non-slip Probe Tips - An Invaluable Addition to your Toolbox 

  • Probes slide onto standard 2mm multimeter probes
  • Tungsten-Carbide tips stay exactly where positioned - without slipping off!
  • Specially machined flutes bite through oxide, dirt, even coatings
  • Easily hold two probes in one hand without slipping
  • Safe to the touch
  • One pair of slide-on tips included*

*Main multimeter leads not included.

These non-slip probe tips make probing around a tightly packed circuit board a breeze. With these non-slip multimeter tips you no-longer have to worry about your probes slipping and sliding, shorting between tracks or just not penetrating through coatings. You can easily hold both probes in one hand whilst adjusting settings with the other hand.

Non-slip probe tips with multimeter probes

The Non-Slip Adapter has excellent ability to penetrate thin coatings and oxidation. Picture “A” shows the tip probing through a layer of enamel on a piece of transformer wire. The circuit board in “B” is intended for wet environments and has a coat of epoxy to seal the connections but the probe easily penetrates the coating. Solder joints and traces that have become oxidized can be dependably probed with the non-slip adapters as shown in “C”. The silkscreen on circuit boards that covers traces and interferes with standard probes can be probed through dependably.

Non-slip probe tips in use Non-slip probe tips in use

The points have a steel shank with a tungsten carbide point that is configured as a 6 fluted inverted cone. Available in two sizes, 0.8mm tips are standard, better grip, better for biting through coatings, and fine 0.6mm tips which are better for fine pitch parts.

$29.95

EE701 Differential Preamplifier

ee701 Differential Scope Preamplifier ee701 10uV Square Wave, 25Hz, x1000

EE-701 Differential Preamplifier

The ee701 is a true differential preamplifier that extends the input sensitivity of any oscilloscope up to 1000x. The wide input common mode accepts signals in the range of ±10V while a selectable cutoff frequency limits wideband noise from obscuring the signal of interest.

• Enhances the input sensitivity of any oscilloscope
• True differential inputs
• Selectable gains of 1, 10, 100, & 1000
• Selectable noise filter cutoff of 10 Hz, 1 KHz, 100 KHz, and 1 MHz
• CMRR > 100 dB DC to 10 KHz
• Useable to 1 MHz
• Accurately measure microvolt-level signals
• Affordable for any lab

Easy to Use
Connect the oscilloscope probes to the ee701.Do not select x10 on the probes except at low amplification – any mismatches in the probes will be amplified which will distort the measurement accuracy. Select AC or DC input coupling and the desired amplification. Set the low pass filter to the lowest frequency that will allow the signal of interest to pass. This will minimize the wide-band noise in the system.

Use the null control to set the DC zero level or AC midpoint level. For repetitive signals the scope averaging function can be used to dramatically reduce any residual wide-band noise from the trace.

The frequency response is flat from DC to 100 KHz at gains of 1, 10, and 100. At a gain of 1000 the gain may be as much as 15% high before rolling off when reaching its maximum bandwidth of about 900 KHz.

Specifications

Included in the box: ee701 Differential Preamplifier, AC 100V-240V 50/60Hz to 5V 1A USB power supply with 2-prong USA style plug, USB power cable.

Not included: Scope and scope probes!

 

$395.00

ee-203 Real-Time Current Monitor with USB

ee203_angled_1024x1024

ee-203 Real-Time Current Monitor Product Overview

  • View current consumption graphically in real-time on any oscilloscope
  • 6 decades of current range 1uA – 1A
  • Wide system voltage range 1.5V – 5.5V
  • USB interface for calibration, control, and data logging
  • Affordable for any lab
  • Can be used with EE1202 USB Breakout board to measure current of USB devices

Designed for developers of low-power and embedded systems, the Real-Time Current Monitor provides a graphical display of the current consumption of any system. Observe the behavior of your system as it comes out of a low-power sleep state of a few microamps and transitions through several power modes of various levels before returning to sleep. A single screen capture from the oscilloscope and/or a CSV data log file and you’ve just documented the complete power profile of your system.

A New Window into System Behavior

With hardware and software so intricately intertwined, a small coding error can have disastrous effects on your system power consumption. Delaying an accidental 10 ms instead of the intended 1 ms while your Wi-Fi transmitter powers up can easily transform a year of battery life into only a month.
Every microcontroller manufacturer has a note in their data sheets that inputs should not be
allowed to float or they will oscillate and consume power. A simple software bug improperly initializing your I/O ports can make the difference between consuming microamps or milliamps.
Having the ability to observe the real-time power consumption of your system allows these and many other types of bugs to be easily discovered and corrected.
Simple to Use Connect the red terminals in-line with the existing power supply to any system you would like to observe, connect the black terminal to ground, and the yellow terminal to an oscilloscope. Connect the USB port to a computer to power the unit and enable additional functionality You can now view the current flowing to your system as it operates, completely correlated with any other signals of interest that you are monitoring on your oscilloscope.

EE1205 Precision Current Source (Sold Seperately)
The EE1205 Precision Current Source can be used to explore the functionality of your Real-Time Current Monitor, to verify its proper operation, and can be used stand alone e.g. to test LED's without needing to worry about using a resistor.

Datasheets

$199.95

TC2030-FTDI-TTL-232R USB to TC2030 Serial Cable

TC2030-FTDI-TTL-232R USB to TC2030 Serial Cable TC2030-FTDI-TTL-232R USB to TC2030 Serial Cable

This product is FTDI's TTL to USB Serial Converter cable fitted with a TC2030 Tag-Connector.

Possible versions include TC2030 legged or TC2030-NL Tag-Connectors fitted to one of the following FTDI TTL to Serial Converer Cables:

  • TTL-232R-3V3
  • TTL-232R-5V
  • TTL-232RG-VSW3V3
  • TTL-232RG-VSW5V
  • TTL-232RG-VREG1V8
  • TTL-232RG-VREG3V3
  • TTL-232RG-VIP

Please specify the version you need in the order comments section.

It may take upto a week for your order to ship - please contact us for availability and lead time.

TC2030 Connections
TC2030 pin FTDI Signal
1  VCC / VCCIO (RED)
2 CTS / TMS (BROWN)
3 RXD / TDI (YELLOW)
4 TXD / TCLK (ORANGE)
5 GND (BLACK)
6 RTS / TDO (GREEN)

 

$69.00

Select the specific FTDI cable you need

10-pin Cortex Ribbon Cable 4" length with 50 mil connectors

10-pin Cortex Ribbon Cable 4" with 50 mil connectors

This cable connects ARM Cortex programmers and debuggers (such as ULINK and Black Sphere) to a target with a 10-pin 50mil FTSH style header. (The standard 10-pin Cortex header).

The default length is nominally 100mm  (4") but we can make it any length you like if you specify the desired length in the Comments section of the Checkout page and add the Shorten IDC Cable service to your order. http://www.tag-connect.com/shortencable.

The connectors fitted to this cable are Harwin M50-3300542 or equivalent and mate with e.g. Samtec FTSH family headers.

Buying this? Why don't you design in our tiny ZERO COST Tag-Connect footprints for Cortex instead ? See here. Our TC2030 -NL footprints occupy under 1/3 the board space of the Samtec FTSH 10-pin header and are infinately cheaper! No Header! No Brainer!

WARNING for ATMEL-ICE users: The Atmel-ICE has it's header pin numbers reversed (standard pin 1 is Atmel-ICE's pin 10). To use our cable with Atmel's reversed pin-number header you'll either need to cut off one a locating lug from one ribbon connector and plug it in backwards, or select the LEMTA option below to order with one of the 10-pin ribbon connectors fitted backwards. If you plug in a standard (correct) Cortex cable you're going to short power and stuff out.

$12.50

(Select the LEMTA option for the backwards pin numbering of Atmel-ICE)