If A Problem Occurs; Specifications - Sennheiser SK 300 Instruction Manual

If a problem occurs ...

If a problem occurs ...
Problem Possible cause
Bodypack Lock mode is
transmitter activated
cannot be
operated,
"Locked"
appears on
the display
panel
No opera- Batteries are flat
tion indica- or accupack is flat
tion
No RF signal Bodypack trans-
at the mitter and
receiver receiver are not
on the same
channel
Transmission
range is exceeded
RF signal is
deactivated
("RF Mute")
RF signal Bodypack trans-
available, mitter is muted
no audio (MUTE)
signal,
Receiver's squelch
"MUTE"
threshold is
appears on
adjusted too high
the display
Bodypack trans-
panel
mitter doesn't
transmit a pilot
tone
Audio signal Bodypack trans-
has a high mitter's sensi-
level of tivity is adjusted
background too low/too high
noise or
audio signal
is distorted
If a problem occurs that is not listed in the above table or if
the problem cannot be solved with the proposed solutions,
please contact your local Sennheiser partner for assistance.
To find a Sennheiser partner in your country, search at
www.sennheiser.com under "Service & Support".
32
Possible solution
Deactivate the lock
mode (see page 13).
Replace the batteries or
recharge the accupack
(see page 8).
Set the bodypack
transmitter to the same
channel as the receiver.
Synchronize the
bodypack transmitter
with the receiver
(see page 21).
Reduce the distance
between bodypack
transmitter and
receiving antennas.
Increase the trans-
mission power
(see page 26).
Activate the RF signal
(see page 14).
Cancel the muting
(see page 14).
Reduce the squelch
threshold setting on
the receiver.
Activate or deactivate
the pilot tone transmis-
sion (see page 27).
Adjust the input
sensitivity
(see page 21).

Specifications

RF characteristics
Modulation
Frequency ranges
Transmission frequencies
Switching bandwidth
Nominal/peak deviation
Frequency stability
RF output power at 50 Ω,
switchable
Pilot tone squelch
AF characteristics
Compander system
AF frequency response
Signal-to-noise ratio
(1 mV, peak deviation)
THD
Max. input voltage
microphone/line
Input impedance
microphone/line
Adjustment range of input
sensitivity
Overall device
Temperature range
Power supply
Nominal voltage
Specifications
wideband FM
516–558, 566–608,
606–648, 626–668,
734–776, 780–822,
823–865 MHz
(A–E, G, GB, see page 3)
1,680 frequencies, tuneable
in steps of 25 kHz
20 frequency banks, each
with up to 24 factory-preset
channels
6 frequency banks,
each with up to 24 user
programmable channels
42 MHz
± 24 kHz/± 48 kHz
≤ ±15 ppm
typ. 10 mW (low)
typ. 30 mW (standard)
can be switched off
Sennheiser HDX
microphone:
80–18,000 Hz
line: 25–18,000 Hz
≥ 115 dBA
≤ 0.9%
3 V
rms
40 kΩ, unbalanced/1 MΩ
60 dB, adjustable in 3-dB
steps
–10°C to +55°C
2 AA size batteries, 1.5 V
or BA 2015 accupack
2.4 V
33