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

Page 5

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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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