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The AD-M2KBNC-EBZ is an ADALM2000 add-on board which allows the user to connect oscilloscope probes and other test leads to the analog inputs of M2K.
Figure 1. AD-M2KBNC-EBZ Top view and bottom view
The AD-M2KBNC-EBZ has 2 single ended input channels and 2 single ended output channels. All these channels are terminated in a right-angle BNC connector which provides quick connection and a locking mechanism. The single ended input channels can be reconfigured as differential input channels by modifying a solder jumper on the bottom of the board. In this way, all 4 BNC connectors will be used for the analog input section and the output of the M2K is still available on the 30 pin header of the board.
Figure 2. AD-M2KBNC-EBZ Isometric view - Package contents
The BNC adapter board is simply plugged into the ADALM2000 and can be used straight away. It does not need any supply or additional circuitry.
Figure 3. AD-M2KBNC-EBZ connected to ADALM2000
Figure 4. AD-M2KBNC-EBZ jumpers for AD/DC coupling
The input and output channels of this board can be AC or DC coupled using the shunt jumpers. In the following table is presented the jumper configuration:
|Jumper||Missing||Jumper 1-2 shorted||Jumper 2-3 shorted|
|S1- Analog In channel 1||inoperable/disconnected||DC coupled||AC Coupled|
|S2- Analog In channel 2||inoperable/disconnected||DC coupled||AC Coupled|
|P4- Analog Out channel 1||inoperable/disconnected||DC coupled||AC Coupled|
|P5- Analog Out channel 2||inoperable/disconnected||DC coupled||AC Coupled|
The AD-M2KBNC-EBZ inputs are reconfigurable. By default 1+ and 2+ channels are referenced to the GND of the board and are single ended input channels. There are some solder jumpers on the bottom of the board that allow the user to change the default configuration and use the differential inputs, as ADALM2000 allows this. If the jumpers are soldered as in the table below, the BNC connectors J3 and J4 correspond to channels 1- and 2- of the ADALM2000.
|Solderjumpers shorted pins||BNC connector-M2K pin correspondence|
|1 2||1 2||1 2||1 2||1+||2+||W1||W2|
|2 3||2 3||2 3||2 3||1+||2+||1-||2-|
Figure 5. AD-M2KBNC-EBZ bottom solderjumpers(left-single ended inputs, right-differential inputs)