Aux Out; 10 Mhz Ref In 50Ω; 10 Mhz Ref Out 50Ω; Aux Trig In 50Ω - Keysight Infiniium S Series User Manual

2
Using the Oscilloscope

AUX OUT

This output signal is selected by the Infiniium oscilloscope application's
Calibration Output dialog box. It can be a DC level, the probe compensation signal
(a square wave used to adjust compensated passive probes), the trigger out
signal, or a demo signal.
10 MHz REF IN 50Ω
The 10 MHz REF IN 50Ω BNC connector is used to synchronize the oscilloscope's
horizontal timebase system to a reference clock that you provide.
The clock you provide must meet the following specifications:
• Input frequency lock range: 10 MHz ±20 ppm
• Amplitude, sine wave input: 356 mVpp (-5 dBm) min to 5 Vpp (+18 dBm) max
• Amplitude, square wave input: 285 mVpp min to 4 Vpp max
• Input impedance: 50Ω (typical)
To use an external reference clock, connect the external clock to the
10 MHz REF IN 50Ω BNC connector; then, in the Infiniium oscilloscope
application's Horizontal dialog box (Setup > Horizontal...), enable the External
10 MHz Reference Clock.
10 MHz REF OUT 50Ω
You can use the 10 MHz REF OUT 50Ω BNC connector to send the oscilloscope's
10 MHz reference clock output signal to another instrument's reference clock
input.
The output has these characteristics:
• Amplitude into 50Ω (internal or external timebase reference selected): 1.65 ±0.05 Vpp
• Frequency accuracy, internal timebase reference selected: 10 MHz ±(12 ppb initial +
• Frequency accuracy, external timebase reference selected: external reference
AUX TRIG IN 50Ω
You can set up the oscilloscope to trigger on the auxiliary trigger signal connected
to this BNC input.
The input impedance is 50Ω, and the signal you provide must be 5 Vpp maximum
between -5 V and +5 V.
28
(8.3 ±0.3 dBm) sine wave
75 ppb/year aging)
frequency (input to 10 MHz REF IN 50Ω)
Keysight Infiniium S-Series Oscilloscopes User's Guide