Operation
R&S
®
EB500
40
Getting Started 4072.8432.02 ─ 04
2. Press "DF" to switch the R&S
EB500 to DF mode. The panel layout will change
to the default direction finding layout with focus on DF IF Panel. Follow the steps
as explained in
chapter 2.3.2.4, "Settings – Receiver and Antenna"
on page 23 to confirm that your DF antenna is installed properly and recognized
by the system.
3. Use the main ROTARY KNOB or the numeric keypad to select the frequency
for which you want to conduct direction finding as explained in
"Basic Operation - Fixed Frequency Mode (FFM)"
mode.
4. Choose an appropriate combination of "SPAN", "STEP" and "selectivity" in order
to optimize the direction finding bandwidth so that it matches the channel spac-
ing of the RF band that is being monitored.
5. Also, choose a sufficiently small DF measurement time so that the measurement
can take place within a short time-frame (this is in particular important when the
observation is done on a moving vehicle).
In case the measurement takes place on a stationary system, use the built-in
compass to configure North Correction, as explained in
on page 38. Alternatively use a standalone compass and manually
key-in the North Correction.
6. Use the PANEL key to change the focus to the Polar Panel
7. Set the DF Quality threshold to a value reasonably high so that reliable DF
measurement can be achieved for the channel that is being investigated.
8. Now the direction finding will most likely produce reliable bearing results, visible
by the stationary position of the yellow bearing arrow in the wind rose. The
heading indicator (white-color vane) in the wind rose corresponds with the com-
pass value.
2.4.6
Selective Call ( R&S
EB500-SL)
The R&S
EB500-SL option can be used to decode selective-call methods and to
demodulate pagers. The following selective-call methods are supported: CCIR1,
CCIR7, CCITT, EEA, EIA, EURO, DCS, DTMF, CTCSS, NATEL, VDEW, ZVEI1,
ZVEI2.
Refer to the operating manual for a detailed explanation.
Options for the R&S
EB500
