Sapphire Instruments LDP-6010 User manual

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70MHz HIGH VOLTAGE DIFFERENTIAL PROBE
USER’S MANUAL [LDP-6010]
This probe is in compliance with IEC-61010-031 CAT. I, Pollution Degree 2.
1. Safety Terms and Symbols
Terms appear in this manual:
_______________________________________________
WARNING. Warning statements identify conditions or practices
that could result in injury or loss life.
_______________________________________________
CAUTION. Caution statements identify conditions or practices that
could result in damage to this product or other property.
Symbols appear on the product:
Danger Protective Attention
High Voltage (Earth) Terminal Refer to Manual
2. General Safety Summary
Review the following safety precautions to avoid injury and prevent damage to this probe
or any products that connected to it.
Observe Maximum Working Voltage
To avoid any injury, do not use the probe under the condition that the voltage between either
input lead or earth is above 2500Vrms CAT II or above 5000Vrms CAT I between two
inputs. This voltage rating applies to both of 1/100 & 1/1000 settings.

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Must be Grounded
This probe is grounded with the shell of BNC connector and an auxiliary grounding
terminal, through the grounding conductor of the power cord of the measurement
instrument.
Before making connections to the input leads of this probe, ensure that the output BNC
connector is attached to the BNC connector of the measurement instrument and the auxiliary
grounding terminal is connected to a proper ground, while the measurement instrument is
properly grounded.
Use Fused Test Prods if Necessary
If this probe is intended to use for measurements in circuits of INSTALLATION
CATEGORY III, it should incorporate with fused test prods.
Do Not Operate Without Covers
To avoid electric shock or fire hazard, do not operate this probe with covers removed.
Do Not Operate in Wet/Damp Conditions
To avoid electric shock, do not operate this probe in wet of damp conditions.
Do Not Operate in Explosive Atmosphere
To avoid injury or fire hazard, do not operate this probe in an explosive atmosphere.
Avoid Exposed Circuit
To avoid injury, remove jewelry such as rings, watches, and other metallic objects. Do not
touch exposed connections and components when power is present.
Use Proper Power Source
To ensure this probe function well, use four AA cells or 6VDC/200mA or regulated
9VDC/120mA mains adaptor or power leads. Do not operate this probe from a power source
that applies more than the voltage specified.
Do Not Operated With Suspected Failures
If you suspect there is damage to this probe, have it inspected by qualified service personnel.

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3. Description
By enabling conventional oscilloscopes to display and measure in-circuit waveforms that
are referenced to high common mode voltages. The differential probe extends the
measurement capability of oscilloscopes in electronic power converters, inverters, motor
speed controls, switch mode power supplies and many applications.
4. Installation
a. Simply plug-in the output BNC connector of this probe to the vertical input of a general
purposed oscilloscope or other measurement instrument, and connects the auxiliary
grounding terminal to a proper ground. The measurement instrument must have a ground
referenced.
b. Connect an appropriate power source to this probe and then turn it on.
c. Select the proper attenuation ratio. When measuring signals below 700V, switch the
attenuation ratio to 1/100 in order to get higher resolution and less noise ratio. Otherwise,
set the attenuation ratio to 1/1000 when measuring signals up to 7000V.
________________________________________________________
WARNING. To protect against electric shock, use only the accessories
supplied with this probe.
d. Using the appropriate probe accessories, connect the inputs to the circuits under
measurement.
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CAUTION. This probe is carry out differential measurement
between two points on the circuit under measurement.
This probe is not for electrically insulating the circuit
under measurement and the measuring instrument.

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5. Appearance
The differential probe looks as follows.
a b c
a. Output Lead The BNC output connector and an auxiliary grounding terminal
are connected to the oscilloscope.
b. Input Leads The input leads of the differential probe connect to sprung hooks
that come with the probe.
c. Sprung Hooks The sprung hooks are connected safely to test points in circuits
under measurement.
6. Power Leads
We offer two types power leads;
a. Adaptor-Lemo®Lead: For the oscilloscope whose power connector is Lemo®connector.
b. Adaptor-Probus®Lead: For the oscilloscope whose power connector is Probus®
connector.
c. USB Power Cord: For the oscilloscope which offers USB connector.

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7. Specifications
Bandwidth DC to 70MHz (-3dB)
Attenuation 1:100/1000
Accuracy ±2%
Rise Time
Input Impedance
<5ns
10MΩ//10pF each side to ground
Input Voltage
- Differential Range ±700V(DC+Peak AC) or 500Vrms @1/100
±7000V(DC+Peak AC) or 5000Vrms @1/1000
- Common Mode Range
±7000V(DC+Peak AC) or 2500Vrms @1/100 & 1/1000
- Absolute Max. Voltage ±7000V(DC+Peak AC) or 2500Vrms @1/100 & 1/1000
in common mode
±7000V(DC+Peak AC) or 5000Vrms @1/100 &1/1000
in differential mode
Output Voltage
- Swing ±7V (into 50kΩ load)
- Offset (typical) <±5mV
- Noise (typical) 0.9mVrms
- Source Impedance (typical) 50Ω (for using 1MΩinput system oscilloscope)
CMRR (typical) -80dB@50Hz, -60dB@20kHz
Ambient Operating Temperature -10 to 40℃
Ambient Storage Temperature -30 to 70℃
Ambient Operating Humidity
25 to 85% RH
Ambient Storage Humidity 25 to 85% RH
Power Requirements*
- Standard 4xAA cells
- Options Power leads, Mains adaptor* (6VDC/200mA
Length of BNC Cable
or regulated 9VDC/120mA), USB power cord
90cm
Length of Input Leads 60cm
Weight 500g
Dimension (LxWxH) 202mmx83mmx38mm
*a. The supplied voltage must be less than 12V and greater than 4.4V, otherwise the probe
could be damaged or can’t operated properly.
b. Polarity is “+”inside and “-”outside. For wrong polarity, built-in circuit protects the
probe, no danger or damage will occur.
c. When the voltage of the cells become too low, the power indicator on the panel will
flicker.

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8. Derating Curve
The derating curve of the absolute maximum input voltage in common mode is shown as
follows;
9. Overrange Indicator
The overrange indicator lights red, if the voltage of the input signal exceeds the linear
operating range of the probe. When this happens, the signal on the probe output may not
accurately represent the signal on the probe input.
10. Inspection Procedure
a. Connect the BNC output connector to the vertical input of a general purposed
oscilloscope.
b. Install four AA cells or connect an appropriate power source to this probe.
c. Set the oscilloscope input to DC coupling and 1V/div. Center the trace on the display.
d. Connect the sprung hooks of the probe to power lines.
e. Set the range of the probe to 1/1000.
f. Then, a 50Hz/60Hz sine-wave of proper amplitude will be displayed on the screen of the
oscilloscope and this means this probe is working properly.
11. Cleaning
Use a soft cloth to clean the dirt. Prevent damage to probe.
a. Avoid immersing the probe.
b.Avoid using abrasive cleaners.
c.
Avoid using chemicals contains benzene or similar solvents.
Lemo® and Probus® are registered trademarks.
Date: May 1,2009
2500 2500
200
20
10
100
1000
10000
1.0E+05 1.0E+06 1.0E+07 1.0E+08
Frequency (Hz)
Voltage (Volt rms)