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R & S E K 8 9 5 / R & S E K 8 9 6
User Manual
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Bandwidth
3.1.9.3 Altering the Bandwidth Quasi>continuously or Selecting a Fixed Bandwidth
(R&S EK 896)
The bandwidth can be either selected from a
choice of fixed frequencies or be set quasi>
continuously.
Upon actuation of key BW+ or BW> the band>
width selection menu is called up. The menu
offers the following functions:
f BW= (move to the next lower fixed
bandwidth)
f BW> (move to the next higher fixed
bandwidth)
f VAR (switchover to quasi>continuous
bandwidths)
The currently effective bandwidth is displayed
in the bandwidth field (in kHz) and in the
menu line (in Hz).
3.1.9.3.1 Altering the Bandwidth Quasi>
continuously
Select quasi>continuous setting by actuating
softkey VAR. Indication VAR is now underlined.
The available bandwidth range (100 Hz to
9!kHz) is subdivided into 128 bandwidths.
Neighbouring bandwidths differ by approx.
3!%.
Example: ....155 Hz Æ 161 Hz Æ 166 Hz...
Depending on the set modulation mode, the
bandwidth can be altered within certain limits
by actuating key BW+ or BW> (see table on the
following page).
For decreasing the bandwidth acuate key BW>.
For increasing the bandwidth actuate key
BW+.
3.1.9.3.2 Selecting a Fixed Bandwidth
Note:
Depending on the set modulation mode, only
certain bandwidths can be set or only these
bandwidths make sense:
FM: f 4 kHz
ISB: 2.1 to 3.1 kHz
SSB: 150 Hz to 3.6 kHz
2.7 kHz (for data link models)
Upon actuation of softkey BW= or BW> selec>
tion from a fixed range of bandwidths is acti>
vated automatically. As a result indication VAR
is no longer underlined.
Depending on the set modulation mode, the
operator can select from up to 17 bandwidths
by actuating key BW+ or BW> or softkey BW=
or BW>, respectively.
The following bandwidths (indications) are
possible:
f 150 Hz (0.1) f 2.4 kHz (2.4)
f 300 Hz (0.3) f 2.7 kHz (2.7)
f 400 Hz (0.4) f 3.1 kHz (3.1)
f 600 Hz (0.6) f 3.6 kHz (3.6)
f 800 Hz (0.8) f 4.0 kHz (4.0)
f 1 kHz (1.0) f 4.8 kHz (4.8)
f 1.5 kHz (1.5) f 6 kHz (6.0)
f 1.8 kHz (1.8) f 8 kHz (8.0)
f 2.1 kHz (2.1)
In order to move to the next larger bandwidth
actuate key BW+ or softkey BW>. In order to
move to the next smaller bandwidth actuate
key BW> or softkey BW=.
Actuate the relevant softkey or BW key several
times, as necessary, until the desired band>
width is indicated.
Once the maximum or minimum value is
reached, the display does not change any more
for further actuation of the relevant softkey or
BW key.
6164.0717.02_01
> 3.22 >
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