User Manual

13
screen. After the self-tests are finished, the normal screen will be displayed and the oscilloscope
is ready for use.
To turn off the scope, press and hold the power button. Hold the button down until the scope
turns off.
Self-Test
The instrument has the capability of doing self-tests for the screen, keyboard, LED-backed
buttons.
To perform the self-test, please refer to the Perform a Self-test section for further instructions.
Self-Calibration
This option runs an internal self-calibration procedure that will check and adjust the instrument.
To perform the self-calibration, please refer to the Self Calibration section for further
instructions.
Check Model and Firmware Version
The model and firmware version can be checked by pressing the Utility key and pressing the
System Status softkey. The number of startup times, software version, FPGA version, hardware
version, product type, serial number and Scope ID will be displayed. Press the Single key to exit.
Connect the Probe
B&K Precision provides passive probes for the 2540C Series oscilloscope. Please refer to the
probe’s user manual for more detailed information. Before connecting probes, please read and
understand the Probe Safety section.
Oscilloscope
Model
Bandwidth
Channels and number of
probes supplied
Probe
Model
Probe Type
2540C
70 MHz
2
PR150B
150 MHz, X1/X10
2542C
100 MHz
2
PR150B
150 MHz, X1/X10
2544C
200 MHz
2
PR250B
250 MHz, X10
Table 5 Analog Probes
Connect the BNC terminal of the probe to one of the channel BNC connectors on the front panel
(see the safety information below). Connect the probe tip to the circuit point under test and the
ground alligator clip of the probe to a grounded point in the circuit.
Probe Compensation
All oscilloscope probes should be properly compensated before their first use with the
oscilloscope. A non-compensated or inadequate compensated probe can cause inaccurate
measurements. The following steps illustrate the proper probe compensation procedure.
1. Press the Default button to reset the oscilloscope to its factory default setup state.
2. Connect the ground alligator clip of the probe to the ground terminal under the probe
compensation signal output terminal.