DFS 902
Name :
DFS 902 S
Simplex Version consisting of :
  • 1 transmitter and 1 receiver operating on a single frequency
  • Either a FL 70 UHF antenna or a separate rod antenna with 3 m of antenna cable.
Name

DFS 902 SD

Semi-Duplex Version consisting of :
  • 2 transmitters and 2 receivers, operating on a single frequency.
    Change-over from transmitter to receiver is by means of antenna change-over switch AU 607 with a control voltage of 5 V (other voltages on request). Additionally, this control lead is also connected to the 10-pole connector. The change-over signal must be supplied to the transmitter and receiver externally.

    Switching Times :
    FuS 607/1 ( 50 mW ) approx. 30 ms
    FuS 607/2 ( 500 mW ) approx. 300 ms
    FuS 670 ( 10 mW ) approx. 30 ms

  • Either a FL 70 UHF antenna or an external quarter-wave antenna with 3 m of feeder
Name:
 DFS 902 D
Duplex Version consisting of :
  • 2 transmitters and 2 receivers using 2 frequencies, each
  • Channel separation : 10 MHz (minimum)
Data trans- mission rate
 1200 Baud
Interface
 optionally TTY (20 mAmps current loop) or V24 , only data input resp. output, without control and check-back signals. Connection via 10-pole Harting connector.
Housing material
 die-cast aluminum , HEG 360
Dimensions of housing
 260 x 360 x 98 mm (10.2 " x 14.2 " x 3.9 ")
Protection class
 IP 55 (or IP 65)
Color
 orange (similar to "RAL" 2004)
Voltage supply
 42 / 48 / 115 / 230 V AC (connection via 3-pole Harting connector)
Antenna connection
 via BNC connector
Control display
 for the display of the system monitoring functions
Data transmitter
 FuS 607/1
Transmitting power 50 mW
FTZ-Nr. QE-10/79
FuS 607/2
Transmitting power 500 mW
FTZ-Nr. QE-10/79
FuS 670
Transmitting power 10 mW
f = 402 ... 475 MHz
FTZ-Nr. A 400 355 V-QE
Data receiver
FuE 607/1
FTZ-Nr. QE-10/79
FuE 670
f = 2400 ... 2500 MHz
FTZ-Nr. A 400 355 V-QE
Note :
The antennas should be mounted reasonable distance apart, and in opposite orientations
(horizontal or vertical) to achieve maximum de-coupling.