BitScope Micro Port 02

Tom Thumb | Mixed Signal BNC Adapter

BitScope Micro Mixed Signal Probe Adapter

BitScope Micro Port 02, Inline Single Channel Mixed Signal BNC Probe Adapter (aka Tom Thumb)

BitScope MP02 is an inline BNC adapter for BitScope Micro. It's designed for use with oscilloscope probes and coaxial cables.

  • Supports Standard Oscilloscope Probes.
  • Use Attenuating, Differential & Current Probes.
  • Switchable Single In-Line Analog BNC Input (CHA).
  • Dual Analog Inputs via Diagnostic Port (CHA/CHB).
  • Shared Comparator Channels (CHA/L7,CHB/L6).
  • Single In-Line Analog BNC Output (AWG).
  • Four Dedicated Logic Channel Inputs (L3..L0).
  • Two more Switchable Logic Inputs (L4/L5).
  • Single In-Line Logic Channel Input (L4).
  • Switchable Clock Generator (CLK/L5).

We call it BitScope Tom Thumb: a flexible in-line mixed signal adapter solution for BitScope Micro.

BitScope Micro and the BNC Probe Adapter with Probe Attached

MP02 replicates the BitScope Micro Diagnostic Port on the 10-pin header mounted behind the BNC socket so full access to all the BitScope signal inputs and outputs remain available.

MP02 provides full access to all the features of BitScope Micro while adding the ability to monitor or generate signals via the BNC channel. It supports switching the BNC channel between the CHA analog input, the built-in waveform generator and logic channel 4. It's even possible to connect other port adapters designed for BitScope Micro via Tom Thumb.

Use Standard Oscilloscope Probes with BitScope Micro!

MP02 makes it possible to use standard oscilloscope probes with BitScope Micro.

Standard 10:1 and 1:1 Switchable Oscilloscope Probe

Passive probes that have 1:1, 10:1, 100:1 or other attenuation ratios can be used. It also supports active differential probes, current probes and most other types of probe which are BNC terminated and designed for use with standard scope inputs.

This is possible because despite its tiny size and appearance, BitScope Micro has electrically compatible analog inputs with 1MΩ/20pF impedance so compensation circuits in standard probes will work the same with BitScope Micro and MP02.

If you need to connect two oscilloscope probes at once we recommend Hammerhead (MP01) instead.

Coaxial Cables and BNC Connections

MP02 is not just for oscilloscope probes. It also allows the use use BNC terminated cables for connection with other equipment that uses this common standard.

RG-58 BNC Terminated Cable.

This makes MP02 ideal for data acquistion and related applications where RG-58 cabling with BNC termination is commonly used. If an application requires 50Ω termination, pass-through terminators like PAC-01 are available.

Compact In-Line Mixed Signal Design

In addition to the BNC connected analog inputs, MP02 provides connections for BitScope Micro's six logic inputs and waveform and clock generator outputs.

BitScope Micro In-Line Data Acquisition

This is done via the 10-pin header mounted behind the BNC socket.

MP02 is an in-line design making it easy to to create compact channel strips to build multi-channel test, measurement and data acquisition systems (Read More).

For example, up to four BitScope Micro can be connected and powered by one Raspberry Pi Model B+ to create a LAN connected multi-channel instrument.

Every input and output is replicated on the 10-pin connector behind the BNC socket so anything that can be connected directly to BitScope Micro directly can be connected via Tom Thumb too. This makes it very convenient when breadboarding new circuit designs, especially if you want access to a BNC terminated signal source from other equipment.

Well connected with Assignable Inputs & Outputs

Extending the BitScope Micro Diagnostic Port, MP02 offers flexible signal routing options.

BitScope Micro Raspberry Pi Oscilloscope with Probes and Clips.

In addition to the BNC input for CHA, both analog channels appear on the header.

Analog (or logic) signals connected via any of the analog inputs are routed to BitScope Micro's logic channels 6 and 7 via its built-in comparators.

This means it's possible to capture up to 8 logic channels at once where two channels can be set to switch at an adjustable level which is ideal for unusual logic families or specialised signal standards (e.g. bipolar or negative voltage logic).

The BNC input is not just for waveform input either. A supplied header allows this connector to be used to capture logic (via L4) or output waveforms synthesized by BitScope Micro (via AWG) too.

Flexible Signal Routing

A shorting plug allows the selection of the signal connected to the BNC socket. By default this is the CHA analog input. Additional plugs may be used to ground reference the analog inputs to prevent noise or crosstalk from open inputs.

MP02 KeyCard

The shorting plug may also be used to route the waveform generator to the BNC socket and the built-in clock generator can be accessed via the 10-pin header.

The keycard shows how this is done.

The three-pin header allows the selection of CHA or the waveform generator (AWG) to the BNC socket. If the AWG is selected this signal can instead of connected to L4 under software control in BitScope Micro.

The two grounds adjacent to the analog inputs on the 10-pin header can be used to ground reference either analog input and connecting either analog input to an adjacent logic channel reduces the input impedance of the analog input from 1MΩ to 100kΩ which in can be very handy if the lower input impedance is required.

Programmable signal control provided by the BitScope Micro Diagnostic Port is available via MP02. For example the four logic channels can be set as active low pull-downs to configure a connected circuit for up to 16 states of operation.

MP02 (100:1)MP02 (10:1)BS05 (1:1)
110V11V1.1V
350V35V3.5V
520V52V5.2V
1kV110V11V

Supports Wide Range of Voltages

This table enumerates full scale voltage ranges available with MP02 when used with BitScope Micro and a 1:1, 10:1 and 100:1 probe.

BitScope DSO Probe Range Selection

It shows the maximum peak-to-peak signal that can be captured at full resolution with (8 bits in normal mode and up to 12 bits in macro mode).

With BitScope DSO this is simply a matter of right-clicking the probe scale widget and choosing the right scale. In the example shown here, a probe scaling of 2:1 has already been chosen but the prescaler (1:5) is about to be selected instead.

Many scaling options are available to support the wide range of oscilloscope probes available because all of them can be used with BitScope Micro and MP02.

Bench, Lab or Rack Mount

Coming soon are some mounting and case design ideas for MP02. The BNC sockets are supplied with ring nuts and washers so MP02 can be permanently mounted (with appropriate metalwork) and BitScope Micro plugged in as and when required.

BitScope Micro Mixed Signal BNC Adapter Specifications

FeatureSpecification
Analog Inputs (Standard Probe) 1
Analog Inputs (Pin Header) 2
Logic Inputs (3.3V/5V) 6
Comparator Channels 2 (via analog inputs)
Waveform Generator 1 (via L4)
Clock Generator 1 (via L5)
Input Impedance (Analog) 1M Ω / 20pF
Input Impedance (Digital) 100k Ω / 5pF
Voltage Range (Direct) -7.5 V ~ +10.8 V (1:1 probe)
Voltage Range (Scaled) -75 V ~ +108 V (10:1 probe)
Device Connection IDC-10 (Micro Port)
Power Requirement None
Operating Temperature 0 °C to 40 °C
Storage Requirements -40 °C ~ +40 °C / 5 % ~ 95 % RH
Dimensions (W x D x H) 20 x 60 x 20 mm
Weight (Net) 16g
FC10A | E&OE 

Related Posts

BitScope
Build a powerful mixed signal workstation with one simple 3D print !Sep 3
Raspberry
Raspberry Pi Zero W, a wireless wonder for only $10 !Feb 28
Raspberry
Raspberry Pi 3 Launch and BitScope BladeFeb 29
BitScope
Physical Computing with Raspberry Pi and BitScope!Dec 01
Raspberry
BitScope Micro with Raspberry Pi Touchscreen Display!Sep 09
Raspberry
BitScope, Ozberry & Pimoroni at Sydney Mini Maker Faire!Aug 12
Raspberry
BitScope Blade for Raspberry Pi at Hannover Maker Faire!Jun 05
Software
BitScope DSO 2.9 Now Available.Jun 02
BitScope
Getting Started with BitScopeMay 08
BitScope
BitScope Micro In-Line Data AcquisitionApr 02
BitScope
Where to Buy BitScope Micro & Accessories.Feb 19
BitScope
BitScope ARM Platform CompatibilityFeb 10
Raspberry
Bootstrapping Raspberry Pi 2 for BitScopeFeb 05
Raspberry
Raspberry Pi 2 and BitScope PerformanceFeb 02
BitScope
BitScope Micro + BNC Adapter BundleDec 23
BitScope
BitScope Connection Ports ExplainedDec 19
BitScope
BitScope Micro and Oscilloscope ProbesDec 10
Raspberry
Raspberry Pi Model A+ or B+ or B+ Slimline?Nov 14
BitScope
Hands on with BitScope Micro at electronica 2014Nov 11
BitScope
BitScope Micro Video Tutorial with Farnell element14Nov 10
BitScope
BitScope Micro and Raspberry Pi at electronica 2014!Nov 06
BitScope
BitScope Micro element14 Webinar Review.Nov 03
BitScope
BitScope Micro Webinar with element14!Oct 29
BitScope
element14 launches BitScope Micro for Raspberry Pi!Oct 27
BitScope
BitScope Micro Diagnostic Port Explained.Aug 16
Raspberry
MagPi talks Raspberry Pi B+, HATs & BitScope.Aug 04
Raspberry
Raspberry Pi B+ BitScope x 4 = 8 analog + 32 logic !Aug 01
BitScope
BitScope Micro, now available at Pimoroni!Jun 01
BitScope
BitScope Model 10 or BitScope Micro?Apr 25
BitScope
BitScope Micro, what's in the box?Apr 17
Raspberry
BitScope Micro Questions & AnswersApr 12
Raspberry
BitScope Micro (New Product) for Raspberry Pi!Apr 11
Education
BitScope Workshop at OzBerryPiApr 8
Software
BitScope Library V2 API Guide PublishedMar 21
Raspberry
Optimizing real-time waveform display for Raspberry PiMar 17
BitScope
Volume purchase discounts now available online!Mar 11
BitScope
BitScope Documentation Updated OnlineMar 05
Software
BitScope DSO Version 2.6 Production ReleaseMar 03
Raspberry
Low cost networked data acquisition with Raspberry Pi.Dec 17
BitScope
BitScope Server, shared remote access for any BitScope!Dec 15
Software
BitScope DSO updated for Server CompatibilityDec 14
Education
Collaborative Solutions, Online & Interactive Education.Dec 09
Education
Powerhouse ThinkSpace Digital LearningDec 04
Raspberry
The Sydney Mini Maker Faire Review.Nov 28
Education
BitScope Ed at the Sydney Mini Maker Faire!Nov 20
Software
BitScope Library V2.0 and Proto Scope ApplicationNov 15
Software
BitScope DSO, Logic, Chart, Meter and Library updatedNov 12
Raspberry
Automated Waveform Analysis with Raspberry PiNov 09
BitScope
Reducing Quantization Noise with BitScopeNov 08
Education
Breadboard One, the 4 Bit Up/Down CounterNov 07
Software
Using a USB BitScope with any Linux system.Nov 05
BitScope
Sydney BitScope, Online Demo Updated.Oct 30
Software
BitScope Touch Screen User InterfaceOct 28
Raspberry
Network access for USB BitScopes via Raspberry Pi.Oct 24
BitScope
BitScope is virtually indestructible, just as we intended!Oct 23
Education
BitScope Ed at OzBerryPi, Presentation Review.Oct 21
Raspberry
BitScope and friends at OzBerryPi Maker SpaceOct 20
Software
Vertical Offsets and Dual Channel DisplayOct 19
Raspberry
How to Install BitScope DSO on Raspberry PiOct 18
Education
Breadboard One, a typical Mixed Signal Circuit.Oct 17
Raspberry
Electronic Projects Lab for Raspberry PiOct 17
BitScope
Dual Channel Active Differential Probe (New Product).Oct 15
BitScope
BitScope Smart Port. The clever connection.Oct 12
Education
BitScope Ed, an Educational Blog about Electronics.Oct 09
BitScope
Why the oscilloscope update rate is important.Oct 06
Raspberry
Visualizing sound with Sonic Pi and BitScopeOct 05
Software
BitScope Software Blog LaunchedOct 04
BitScope
Differential measurements matter, here's why...Oct 01
Raspberry
How to Install Raspbian and BitScope on Raspberry PiSep 29
BitScope
BitScope Website Upgrade and Blog LaunchSep 29
Raspberry
High speed data acquisition with Raspberry PiSep 25
Raspberry
BitScope Software for Raspberry Pi OscilloscopeSep 27
Software
BitScope DSO 2.7 update (for Raspberry Pi only)Sep 24
Raspberry
BitScope Raspberry Pi OscilloscopeSep 20
BitScopeBitScope DSO Tutorial ExamplesSep 09
More...