Connecting to a circuit
Warning: This measurement system contains laser sources; exposing these laser sources may cause laser
exposure. Except for the sensor tip cables on the sensor head, do not remove any plastic or metallic covers from
the sensor head or comp box or attempt to disassemble the product.
Warning: Do not connect the measurement system to an energized circuit to avoid the risk of shock. Always de-
energize the circuit-under-test before installing or removing the tip cable from the circuit-under-test. The plastic
case of the sensor head and the shield tip of the sensor cable do not supply the isolation.
Warning: To avoid the risk of electrical shock or RF burns while the DUT is energized, do not touch the sensor
head or sensor tip cable while taking measurements. Always keep a 1 m (40 in.) clearance from the sensor head
during the measurement.
Figure 3: RF burn hazard zone around the sensor head
on page 26
2: Maximum safe handling limits for common mode voltages between the sensor head and earth ground.
on page 26
CAUTION: To avoid possible damage to the equipment, do not connect the coaxial (common) shield of the sensor
tip cable or SMA input to the high impedance portion of a circuit. The additional capacitance can cause circuit
damage. Connect the coaxial (common) shield to the low impedance section of the circuit.
Note: Touching the sensor head or sensor tip cable when measuring a high frequency common mode signal
increases the capacitive coupling and can degrade the common mode loading on the circuit-under-test.
Warning: To prevent the arc flash caused by a different potential, do not place the sensor head or sensor tip cable
on the circuit that has the different voltage.
The following steps describe the process for connecting the measurement system between an oscilloscope and the DUT.
1. Verify the DUT is not connected to an energized circuit.
2. Connect the compensation box to one of the channels on the oscilloscope.
3. Install the sensor tip cable to the sensor head.
a. Line up the sensor tip cable with the sensor head.
Take care to avoid bending or twisting the sensor tip cable assembly during this process.
b. Connect the SMA connector of the sensor tip cable to the sensor head. Use the SMA wrench to tighten the SMA
cable to 4 to 5-in lbs.
Use the adjustment tool that was shipped with your probe.
Getting started
TIVP Series IsoVuTM Measurement System User Manual
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