Sennheiser EM 2003-9/90 Modo De Empleo página 10

Connecting the AF-/headphone output
AF-output
Socket J* delivers the AF-output signal balanced,
floating.
Technical data
Connector:
Impedance:
Nominal load
Output voltage for
nominal swing/
peak swing:
XLR, floating
approx. 20 Ohm
> 200 Ohm
2.5 V a 10 dBm/
5 V a 16 dBm
Head phone output
For monitoring purposes connect mono or stereo
headphones, e g. HD 250 linear, to jack socket t.
Mains connection/Battery operation
Mains connection
The receiver is preset for operation on 200 to
265 V/ 50 - 60 Hz mams power. After the voltage
selector ® has been switched to position "110 V" the
receiver can also be operated at 90 -135 V / 50 -
60 Hz.
Battery operation
The receiver can also be powered from external DC
sources.
If the receiver is equipped with the optional Lemo
socket connect DC source as shown.
This socket is also available as retrofit item (order
no. 37184).
A further possibility is the direct connection of the
DC source (see enclosed diagramm).
Technical data
Connector: 6.3 mm 0 jack
Nominal load: 5 50 Ohm
Output voltage for
nominal swing: 1.55 V ± 2 dB, adjustable
Technical data
Required voltage: 12 to 24 V
Max. current consumption: 210 mA
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Putting into operation
1. Check whether the transmitter frequency is iden¬
tical with the receiver frequency.
2. Switch on the t'ansmitter.
3. Switch on the receiver (switch ®).
Adjusting the AF-output level
1. Turn switch X into position "DEV".
2. Speak into microphone at transmitter.
3. Adjust the transmitter modulation in such a way
that the swing indicator shows a swing of 30%
for peak volumes.
4 Adjust AF-output level control
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in such a way
that the sound recording or sound reproduction
device isn't overmodulated. Referring to the
nominal swing the adjustment range amounts to
10 mV to 2.5 mV.
Setting the squelch
The EM 2003 is equipped with an electronic
squelch which mutes the AF output when the RF-
input voltage falls below a certain response thresh¬
old.
Adjustment
1 Set squelch control © to position 3-4.
2. Switch transmitter off. If noises or interference
signals are audible, turn squelch control @ clock¬
wise until the interference signals disappear
(diversity indicator ©dark) Important: Avoid to
increase the response threshold to values above
position 6 since at a too high response threshold
the squelch control reacts to variations in field
strength even during normal operation (trans¬
mitter switched on) and interrupts transmission.
(- "Setting up the device" and "Connecting and
positioning detached antennas").
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