Transmit Frequency; Sweeping - H Heuer Instruments UMDT51A User Manual


Press the knob or
digit to change.

Turn the knob to adjust the level at this selected resolution.

Repeat this process to a resolution of 0.1dB or until the desired level is
obtained.

Press the
The current setting for TX level (only if Source is not OFF) is displayed on the
LCD under the current date/time in the TXSTATUS area.
NOTE: Setting the TX level, automatically sets TX source to SINE.

Transmit frequency

Set the frequency of the signal transmitted at the TX terminals:

Press the

Turn the knob clockwise to increase, or anti-clockwise to reduce, the TX
frequency.

Press the knob or
digit to change.

Turn the knob to adjust the frequency at this selected resolution.

Repeat this process to a resolution of 1 Hz or until the desired frequency is
obtained.

Press the
The current setting for TX frequency (only if Source is SINE) is displayed on the
LCD under the current date/time in the TXSTATUS area.
NOTE: If the sweeping setting is set to ON, the TX frequency is swept over the
current frequency span.

Sweeping


Press the
For measurements that transmit a signal to the RTX terminals (eg. Return Loss,
LCL and NEXT / Loss), setting Sweeping to ON, will perform a swept
measurement across the currently selected frequency span.
When TX Source is set to SINE, the Sweeping setting controls whether the TX
Frequency is swept across the frequency span.
NOTE: Changing Rx Range (manually or during Auto-ranging), resets the TX
frequency sweep.
When Sweeping is OFF for Remote Loss and FEXT measurements, the level
spectrum at the selected RTX terminals is displayed. If Sweeping is set to ON for
these measurements, the maximum signal (or Peak Hold) received across the
LT51 User Manual
key to move the cursor to the next most significant
key (or any key) to clear the dialog box.
key and then [f4] to select Frequency.
key to move the cursor to the next most significant
key (or any key) to clear the dialog box.
key and then [f5] to toggle Sweeping between ON and OFF
Configuring the Tester
27