Technical Data; Scope Of Supply - LD 587 55 Manual Del Usuario

Instruction sheet 587 55
1 Components
1 UHF transmitter
Power input (1a)
Operation indicator (1b)
Modulation input (1c)
Mode switch (1d)
Antenna output (1e)
Internal thread M6 (1f)
2 Loop dipole
4-mm plug (2a
3 Antenna rod
4 Receiver dipole with lamp
Screw thread M4 (4a)
Lamp 3.8 V (4b)
5 Receiver dipole with diode
Screw thread M4 (5a),
4-mm sockets (5b)
6 Mounting rod for UHF transmitter
M10 thread (6a)
7 Mounting rod for receiver dipoles
Internal thread M4 (7a)
8 Table-top power supply
2

Scope of supply

1 UHF transmitter
1 Loop dipole
1 Antenna rod
1 Receiver dipole with diode
1 Receiver dipole with lamp
1 Mounting rod for UHF transmitter
1 Mounting rod for receiver dipole
1 Table-top power supply
3 Description
The UHF transmitter is used to investigate the propagation of
electromagnetic waves in free space (e.g. in the air), in dielec-
tric media (e.g. in water) and on Lecher lines. It can be used in
continuous wave mode or with a modulating signal; the modu-
lating signal can be an audio signal, a video signal (with some
restrictions) or a TTL data signal.
The pluggable loop dipole functions as a transmitter antenna;
the enclosed antenna rod acts as a director when placed in
front of the receiver antenna, and as a reflector when placed
behind it.
Two receiver antennas can be used. The receiver dipole with
lamp indicates the field strength of the received signal as a
function of the antenna distance and polarization in a qualita-
tive manner through the change in lamp brightness. The re-
ceiver antenna with diode demodulates the high-frequency
received signal and can be connected to a multimeter for
quantitative display of the field strength or to an audio-
frequency amplifier to generate an audio or video signal.
4

Technical data

4.1 UHF transmitter:
Operating data:
Frequency:
Wavelength:
Operating voltages:
Power consumption:
Operating modes:
CW:
FM:
AM:
TXD:
Modulation options:
Amplitude modulation AM:
Frequency modulation FM:
Transmit data TXD:
Output power (into Z = 200
CW:
FM:
AM:
TXD:
Standing-wave resistance:
for Lecher line experiments
433.92 MHz (± 100 ppm)
ISM band (industrial, scientific,
medical) of UHF range
69.14 cm
from table-top power supply
15 W
continuous wave
frequency modulation
amplitude modulation
transmit data
digital data input for data
transmission with the PC using
on/off keying (OOK)
100 Hz...10 kHz, max. 1 V
100 Hz...10 kHz, max. 1 V
max. 4 kbps, TTL level
Ω ):
3.0 W
3.0 W
1.5 W
3.0 W
with reduction to 0.3 W
max. 20 : 1
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