Instrument Setup - Tenma 72-14520 Instructions Manual

INSTRUMENT SETUP

Vertical system setup
• The 2 analogue channels are CH1 and CH2, and for 4 channel models the
channels are CH1 to CH4. Each channel should be set up individually.
• Press CH1 to CH4 and the system will display the operation menu for that channel.
• CH1~CH4 contains 3 states: open, activate, and shut down.
• Open:
Allows the corresponding channel waveform to display on the screen.
• ACTIVATION: Only opened state can be activated. In the active state, the vertical
menu and the vertical control knobs (POSITION, SCALE) are for changing
activated channel setting. Any of the channels that have been opened but not
activated could be activated by the corresponding channel keys
• OFF: No waveform appears on the display.
Functions Menu
Coupling
Bandwidth Limit
Vertical Sensitivity
Probe
Next Page
Invert
Bias
Bias Voltage
Return to Zero
Return
Channel coupling setup
• If for example a signal is applied to CH1 which has a sine signal that contains DC
quantities.
• Press F1 to select AC and set up as AC coupling. Any DC quantities in the signal
are now intercepted.
Press F1 to select DC.
• Both AC and DC quantities of the signal being measured can now pass through.
• The waveform displays both AC and DC quantities of the signal.
Setup
AC Intercepts the DC quantities of the input signal.
DC
GROUND
On Limit bandwidth to 20MHz to reduce noise display.
Off
Coarse tune
Fine tune is further tuning within the coarse tune
Fine tune
1X, 10X, Select either value based on the probe attenuation
100X and factor to keep the vertical deflection factor reading
1000X
Go to the second page of the channel menu
On
Off
On
Off
Adjust with the multi purpose control, the bias
voltage is used to offset the DC voltage the signal
Return to the first page of the channel menu
8
Notes
Pass AC and DC quantities of input signal
Disconnect input signal
Full bandwidth
Coarse tune in steps of 1-2-5 to set up the
deflection factor of the vertical system.
set up to improve the vertical resolution.
correct.
Waveform invert function on.
Normal waveform display.
Turns on bias function
Turns off the bias function
Returns the bias voltage back to 0V