LD 587 55 Manual Del Usuario página 7

Page 3/4
Connections:
Power input
Modulation input
Antenna output
General data:
Housing:
Weight:
4.2 Loop dipole:
Characteristic wave
impedance:
Connection:
Dimensions:
4.3 Antenna rod:
Dimensions:
4.4 Receiver dipoles:
Lamp data:
Lamp socket:
Dimensions:
4.5 Mounting rods:
Mounting rod
for UHF transmitter
Mounting rod
for receiver dipole
Note on the lengths of antenna rod, receiver dipoles and loop
dipole:
The ideal elementary (or "Hertz") dipole has an overall length
of λ/2 and a diameter D = 0. For diameters D > 0, a contract-
ing factor becomes apparent for the overall length and the
bandwidth becomes greater. (Flatter antenna resonance
curve).
Mini-Mab 5
BNC socket
4-mm safety sockets,
high-frequency power output
with symmetrical supply, for
loop dipole, Lecher line or
200 Ω terminator
20.5 cm × 8.5 cm × 50 cm
full metal enclosure with inte-
grated heat sink
400 g
200 Ω
4-mm plug pair for connecting
to antenna output or open end
of the Lecher line
14 cm × 7 mm dia.
32 cm × 7 mm dia.
3.8 V / 70 mA
E10
14 cm × 7 mm dia.
13 cm × 10 mm dia.
13.7 cm × 10 mm dia.
5 Operation
5.1 Putting the UHF transmitter into operation:
- Connect the loop dipole (2) or the Lecher line (from 587 56)
to antenna output (1e).
- Select the desired operating mode with mode switch (1d).
- Connect the table-top power supply to power input (1a),
plug the unit into a mains socket and switch it on.
5.2 Using the receiver dipole with lamp:
Additionally recommended:
2 Saddle bases
- Operate the UHF transmitter in CW mode using the loop
dipole.
- Mount the receiver dipole with lamp using the mounting rod
for receiver dipoles and align it parallel to the loop dipole so
that the lamp lights up brightly.
- Vary the distance, move the receiver dipole around the loop
dipole and lift it above the loop dipole, align the receiver di-
pole perpendicularly; observer the brightness of the lamp
each time.
Instruction sheet 587 55
300 11