Sony WRR-805A, Service Manual

Page: 18 / 54

1-14
WRR-805A (CE, AU)
16
Notes
To eliminate interference or noise, please note the
following.
• Do not use two or more wireless microphones or
transmitters whose wireless channels are the same.
• The number of wireless channels actually usable in a
multi-channel system may be smaller than the normal
capacity of that system if there is interference from TV
broadcasting or other RF signals.
• When using two or more WRR-805As, do not directly put
one unit upon the other
Error Messages
When a problem occurs, one of the following error message
may appear on the display.
Messages Contents Measures
ERROR 03 The battery voltage exceeds the allowable value. Use the specified batteries.
ERROR 11 An error occurred in backup memory data. The memory data is initialized. Reset the group and
channel settings.
ERROR 21 The PLL synthesized circuit is in trouble. Contact your Sony dealer.
ERROR 51 Defect of the A/D converter. Contact your Sony dealer.
(3) Noise squelch
The audio output is muted to eliminate noise which may be
heard when there is such excessive interference RF signal
that the tone squelch does not work.
Microphone System Operation / Error Messages
18
Specifications
Tuner section
Type of reception F3E
Circuit system Dual conversion superheterodyne
Receiving frequencies
792 - 806 MHz
(TV channels 66 and 67)
Local oscillators Crystal controlled PLL synthesizer
Selectivity 60 dB or more (at ±250 kHz detuned)
Spurious rejection ratio
70 dB or more
Image rejection ratio
60 dB or more
Muting level 15 dBµ ±5 dBµ
Type of antenna
1
/
4
-wavelength wire
Frequency range 100 Hz to 15,000 Hz ±3 dB
De-emphasis 50 µsec
Signal-to-noise ratio
30 dB or more at an A-weighted RF
input level of 10 dBµ
60 dB or more at an A-weighted RF
input level of 60 dBµ
(±5 kHz deviation at 1 kHz
modulation)
Distortion 1% or less (±40 kHz deviation at
1 kHz modulation)
Tone signal frequency
32.768 kHz
Output level –58 dBm (±5 kHz deviation at 1 kHz
modulation)
Output impedance 600 ohms, balanced
Output connector 3.5 mm dia. , balanced
0 dBµ = 1µV
0 dm = 0.775 Vrms (600 ohms loaded)
General
Power requirements DC 3 V, two batteries LR6 (size AA)
Current consumption
Approx. 170 mA
Battery life Approx. 6 hours of continuous use with
two Sony LR6 batteries at 25
°
C
Operating temperature
0
°
C to +50
°
C (32
°
F to 122
°
F)
Storage temperature –20
°
C to +55
°
C (–4
°
F to +131
°
F)
Dimensions 44
×
121
×
24 mm (w/h/d)
(1
5
/
8
×
4
7
/
8
×
31
/
32
inches)
Mass 140 g (6 oz) including batteries
Supplied accessories
Attachment case with a belt clip (1)
Output cable (1)
Operating instructions (1)
Design and specifications are subject to change without
notice.
17
While pressing down the shoe
on the case
1
, pull out the belt
clip
2
.
Use of the Soft Case
The soft case can be used as shown below.
Output cable holder Inserting the unit in reverse direction Detaching the belt clip
Attaching the unit to a handle or a
belt
Cable
hoders
1
2
Turning the unit
Attaching the unit to a camcorder
To microphone
input of the
camcorder
MONITOR connector can be
used without hindrance.