Rohde & Schwarz Smart Instruments UP300, Operating Manual

Page: 128 / 355

Generator R&S UP300/350
E-1147.2759.00 6-128 Operating Manual, 11/2007
Entering the Reference Value for the Individual Amplitudes
Use You can enter the amplitudes of the individual signal components in dBr
(a[dBr]), refering to the reference value (V
ref
). The absolute
amplitude of each component (V
abs
) is derived from:
20
] [
10
dBr a
ref abs
V V
∗ =
Selecting
the channel 1. Press the numeric keys 1 , 2 , or 3 to select channel Ch 1 , Ch 2 , or both
channels Ch 1&2 .
The selected channel is displayed in green in the channel display.
Entering the
reference value
2. Press the function key in the menu.
An entry field containing the currently applicable setting is displayed. The
default setting is “100 mV (0.1 FS)”. At the same time, the function keys
[13] are assigned various units of measurement.
Analog Digital
3. Enter a new value ( Ê 5-65) and complete the entry by selecting a unit of
measurement (function key).
The permissible entry range depends on the total signal amplitude
(
Ê 1-15).
The new setting is stored and displayed in the parameter field.
(Analog)
(Digital)
Note: The maximum limit of signal amplitude applies if only the
MULTISINE generator function is set. If other generator functions (e.g. DC
OFFSET, NOISE) are activated, their amplitude will also be taken into
consideration and the maximum signal amplitude decreases accordingly.
Ch 1 Ch 2