PicoScope 2200 Series User's Guide
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ps2200.en
3.5.3
Signal inputs
The PicoScope 2200 Series oscilloscopes have BNC oscilloscope connectors. The
inputs have an impedance of 1 M , so they are compatible with all standard scope
probes including x10 attenuated types.
3.5.4
Compensating probes
We recommend that you compensate each oscilloscope probe before using it with your
PicoScope. Compensation instructions specific to the probe are included in the leaflet
supplied with the probe.
Connecting a probe for compensation
1. Connect your probe to the signal generator
output as shown on the right.
2. Run the PicoScope software.
3. Click the AWG button and set the AWG to
generate a 1 kHz 1 volt square wave.
4. Follow the compensation (or 'trimming')
instructions in the probe leaflet.
3.5.5
AWG connector
The
AWG
connector (labelled
GEN
or
Signal Out
on some oscilloscopes) on the front
panel carries the output of the oscilloscope's built-in signal generator, which can
generate a number of built-in waveforms, as well as arbitrary waveforms from a user-
defined table of data.
Instructions for use
If you are using the PicoScope 6 program, refer to the
PicoS cope 6 U ser's G u ide
for
information on how to configure the signal generator.
If you are writing your own software, refer to the relevant
.
AWG output specifications
Refer to the
PicoScope 2000 Series
datasheet, available on our website.
3.5.6
EXT connector
The
EXT
(External) trigger input on some models can be used as a trigger source. The
trigger source is selected using the trigger drop-down menu in the PicoScope
software, or using a function call if you are writing your own software.
The
EXT
input uses dedicated circuitry with a software-configurable threshold to
detect a trigger signal. This has the advantage of freeing both analog channels for
viewing signals. However, if trigger timing accuracy and resolution are critical, we
recommend using the channel A or B input as the trigger source. These channels use
digital triggering, which is accurate to one sample period and has a vertical resolution
of 1 LSB.
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