Operation
R&S
®
DDF205
18
Getting Started 4073.0187.02 ─ 03
●
X8 VIDEO A, X9 VIDEO B SMA outputs provide analog I-Q baseband or AM
and FM demodulated signal for further processing. Can also be switched to out-
put-controlled analog intermediate frequency (IF) in two channels with an adjust-
able carrier frequency of 0
Hz to 70
MHz.
●
X10 REF IN BNC input for synchronizing with an external 10
MHz reference
frequency normal.
●
X11 REF OUT BNC output provides a 10
MHz reference frequency normal for
synchronization of other devices. Frequency normal dependent on selected
internal or external reference.
●
X12 GPS/TR IN BNC input for an external 1
sec trigger pulse, e.g. from a GPS
device.
5. AUX / AUX Audio.
●
X3 AUX AUDIO is a 25-pin D-Sub female connector with the output of different
audio signals.
●
X4 AUX is a 25-pin D-Sub female connector for controlling external antenna
switching units.
6. X2 ANTENNA DF.
A 25-pin D-Sub female connector for controlling direction-finder antennas.
7. Serial Interfaces – EIA 232D Compatible.
●
X5 COM2, 9-pin D-Sub male connector.
●
X6 COM1, 9-pin D-Sub male connector.
X5 and X6 can be used for:
●
Serial GPS devices according to the NMEA0183 standard. Either one of the X5
or X6 connectors can be used for an external GPS device, to determine the
location and the exact time of the R&S
DDF205.
●
Serial compass devices according to the NMEA0183 standard. Use this con-
nector for an external compass device to determine the direction of your vehicle.
This will mostly be used in combination with direction finding.
8. Grounding Post for Earth / Chassis Ground.
Signal Interfaces
All I/O, RF, signal interfaces (X2-X6, X8-X14) must be operated with double
shielded cables.
Rear-Panel Tour
