DXC100A PROBE
MANUAL
June, 2009
LeCroy Corporation 700 Chestnut Ridge Road Chestnut Ridge, NY 10977
DXC100A
PROBE INFORMATION
&
CALIBRATION PROCEDURE
Страница 1: ...DXC100A PROBE MANUAL June 2009 LeCroy Corporation 700 Chestnut Ridge Road Chestnut Ridge NY 10977 DXC100A PROBE INFORMATION CALIBRATION PROCEDURE ...
Страница 2: ...transportation charges prepaid This warranty replaces all other warranties expressed or implied including but not limited to any implied warranty of merchantability fitness or adequacy for any particular purposes or use LeCroy shall not be liable for any special incidental or consequential damages whether in contract or otherwise Internet www lecroy com 2009 by LeCroy Corporation All rights reserv...
Страница 3: ... Setup 6 2 Input X10 DC Attenuation 7 3 X10 DC CMRR 7 4 Input X100 DC Attenuation 7 5 X100 DC CMRR 8 6 Input X10 LF Compensation 8 7 X10 LF CMRR 8 8 Input X10 HF Transient Response 8 9 X10 HF CMRR 8 10 Input X100 LF Compensation 9 11 X100 LF CMRR 9 12 Input X100 HF Transient Response 9 13 X100 HF CMRR 9 14 Final Adjustments and Notes 9 Operating Environment 13 Safety Precautions 13 CERTIFICATIONS ...
Страница 4: ... set without following the proper compensation procedure can result in a significant decrease in the CMRR capability of any differential probe pair It is considered good practice to compensate a probe pair for a given amplifier and then keep the probe pair and amplifier together as a system Similarly it is important that once a probe is compensated for a given amplifier the respective probe always...
Страница 5: ...ocedure is the last step in the DXC100A Probe Full Calibration Procedure Once you are accustomed to making these adjustments they become quick and easy Part 2 can be attempted when high slew rates 1V ns are encountered and or when high frequency time constraints less than 20ns and frequencies greater than 1MHz CMRR is especially important Note Do not change any of the adjustments associated with t...
Страница 6: ...ector no resistors COAX Cables 2 50 ohm Termination 50 ohm If oscilloscope has no 50 ohm input impedance Termination 75 ohm 50 ohm may be substituted Trimmer Tool Not supplied with probes Refer to Figure 1 1 for the location of adjustments and to the schematic diagram in Figure 1 2 for guidance Both figures can be found at the end of this manual 1 DA1855A and Oscilloscope Setup Follow the sequence...
Страница 7: ...button Measure the dc source with DVM and note the actual voltage e g 149 821 volts Set the Precision Voltage Generator to equal the noted voltage e g 149 821 volts 1 Set the oscilloscope to 10mV div Press the Input DC button Set the BW Limit to 20MHz Press the X10 Gain Button to invoke AUTOBALANCE Adjust R5 X10 DC to bring the DA1855A output to center screen 0 volts on the oscilloscope A 1 divisi...
Страница 8: ...al trigger input and then trigger the oscilloscope on its external trigger input Adjust C7 X10LF so the amplitude at the front of the waveform 1µs matches the amplitude at the rear of the waveform 10ms using 1ms div 7 X10 LF CMRR Setup Continue from the previous step using BW Limit set to 20MHz and the oscilloscope set to 10mV div and 10µs div and connect the probe and probe to the pulse generator...
Страница 9: ...or s high amplitude output using a 50 ohm or preferably 75 ohm termination the BNC T and two BNC to probe tip adapters Press the Input DC button Adjust C18 X100 LF1 and C12 X100 LF2 for minimum displayed signal Ignoring the first 1µs 0 1div the residual displayed amplitude should be less than 2mV 0 2div peak to peak 12 Input X100 HF Transient Response Setup Press the Input Off button Press the X10...
Страница 10: ...refore it is reasonable to make minor adjustments to the probe compensation to improve the CMRR using a specific source Do this by connecting both probes to a suitable test point in the circuit under test and adjusting the C8 X10 LF R2 X10 HF1 R8 X10 HF2 or C18 X100 LF1 and R18 X100 HF1 as needed This is the same as performing the DXC100A Probe Short Calibration Procedure When the probe has been p...
Страница 11: ...Operator s Manual 917422 00 RevA 11 Figure 1 1 The DXC100A Board Layout ...
Страница 12: ...DXC100A Probe 12 917422 00 RevA Figure 1 2 The DXC100A Schematic ...
Страница 13: ... operated in a clean dry environment Do not operate with suspected failures Do not use the product if any part is damaged All maintenance should be referred to qualified service personnel Keep product surfaces clean and dry Connect probe to the measurement instrument before connecting the probe test leads to a circuit signal being tested Do not apply a voltage to any input that exceeds the maximum...
Страница 14: ...trical equipment for measurement control and laboratory use Part 031 Safety requirements for the hand held probe assemblies for electrical measurement and test The design of the differential probe has been verified to conform to EN 61010 031 safety standard per the following limits Installation Overvoltage Category I Refers to signal level which is applicable for equipment measuring terminals that...
