High-Voltage Differential Input Cable - Used to measure the input voltage signal after connecting it to the insulated plunger hook clip. It can be extended with the extender leads (approx. 1 m). When using the extender leads, the frequency of the signal under test should be below 5 MHz.
Max. Differential Mode Input Voltage - 1500 V (DC + peak AC)
Overrange Indicator - When the voltage under test exceeds the probe range, the overrange indicator lights on.
Attenuation Switchover Button - Press this button to switch over between the voltage range (attenuation) settings of the probe. For the PHA series probe, two attenuation ratios are available: 500X and 50X.
- 50X indicates that the maximum measurement voltage is 150 V
- 500X indicates that the maximum measurement voltage is 1500 V
Bandwidth Switchover Button - Press this button to switch over between the bandwidths. The PHA series probe supports two bandwidths.
- FULL: indicates the full specified bandwidth of the probe. For PHA0150, its full bandwidth is 70 MHz; for PHA1150, its full bandwidth is 100 MHz
- 5 MHz: When measuring the low-frequency signal, to reduce the interference of the high-frequency signal, you can select the 5 MHz bandwidth
Audible Overrange Alarm On/Off Button
- ON: Turns on the alarm beeper
- OFF: Turns off the alarm beeper
- When ON, an audible alarm will be sounded once the voltage under test exceeds the probe range.
Load Impedance - The output impedance of the probe is 50 Ω. When the input impedance of the load (e.g. oscilloscope) is 1 MΩ, the measured signal amplitude is input amplitude. When the input impedance of the load is set to 50 Ω, the high-frequency amplitude-frequency characteristics will be flatter, and the measured signal amplitude is half of the input amplitude.
USB Power Interface - A standard USB Type-C interface. It provides power with a standard USB adapter. You can connect it with the oscilloscope to provide power for the probe; or use the mobile power supply to charge for the probe. The power specification should be DC 5 V, 1 A.
Output Interface - indicates a standard BNC output terminal, which is compatible with the waveform measuring instruments of most manufacturers.