Setting Up the Oscilloscope 1
Infiniium Z-Series Oscilloscopes User’s Guide 17
Power Supply Protection Features
The Z-Series oscilloscope’s power supply has built-in protection features for
over-voltage, over-current, and over-temperature fault conditions. Figure 2
identifies the power supply LEDs and Table 4 describes their conditions.
When the over-voltage fault occurs (and the power supply shuts down), you must
unplug the power cord, wait 30 seconds, and plug the power cord back in to reset
the protection latch and allow the oscilloscope to be powered-on again.
When the over-temperature fault occurs, the temperature must drop below 110 °C
before you can power-on the oscilloscope again.
Connecting Oscilloscope Probes
The Infiniium Z-Series oscilloscope channel 1-4 inputs have:
• 3.5 mm threaded RF connectors (like Keysight sampling oscilloscopes) to
ensure the most reliable signal integrity.
• A convenient automatic torque mechanism that ensures a consistent 8 in-lbs
connection.
• An AutoProbe II interface connector with pins that provide probe power,
identification, and other communication signals.
Table 4 Power Supply LED Meanings
AC LED DC/FLT (Fault) LED Condition
Green Green Normal operation
Off Red Low or NO AC
Green Red Over-Voltage Protection
Green Red Over Current
Green Orange Thermo Alarm Warning
Green Red Fault Over-Temp
Green Red Remote On/Off
Maximum Input Voltage
Do not exceed the maximum input voltage rating. Oscilloscope channels 1-4, 1R, and
3R are rated for maximum input of ±5V including transients.
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