External connections, Understanding the display – GxT Ferret 91 2-Channel Labscope User Manual
Page 5

5
External Connections
COM
Signal ground connection. Common for CH1 and CH2.
CH1
Input for CH1 signal. AC coupled (DC Component of the signal is blocked).
Bandwidth using this input is 10Hz to 100kHz. With the input DC coupled
(direct coupled), the bandwidth is DC to 100kHz. Maximum input voltage is
300 VAC or 300 VDC. Please note the trigger source is always CH1.
CH2
Input for second signal in a dual-channel display mode. Maximum input voltage
is 300 VAC or 300 VDC.
RS-232
RS-232 interface for computer communication.
DC9V
Input to power the unit from an external AC Adapter. (North America Only)
Understanding the Display
Indicates
Trigger
Position
Channel 1
Voltage
Scale
Indicates
AC Coupling
for Channel 1
Indicates
Channel 1
Filter in On
Trigger
Slope
Trigger
Level
Channel 2
Voltage
Scale
Waiting for
Trigger
Signal
Indicates
Channel 2
Filter is On
Indicates AC
Coupling for
Channel 2
Horizontal
Time/Division
W
Measurement Display Area
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