Yaesu VR-5000, Руководство по эксплуатации

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VR-5000 O
PERATING
M
ANUAL
12
Installation
MUTE Terminal Connections
The MUTE jack on the rear panel allows the receiver to be silenced during transmission,
should the
VR-5000
be utilized with an external transmitter (not available from Yaesu).
Typically, such a transmitter will have an internal relay, the contacts of which will close to
ground during transmission; connection of a cable connected to this type of switching
system will cause the audio output from the
VR-5000 to be cut off (when the center con-
ductor is shorted to ground).
If an external transmitter is used, it is
important also to disconnect all anten-
nas connected to the
VR-5000
during
transmission. An external switch or re-
lay will be required for this task.
REC Jack Connections
The rear panel’s
REC
jack provides constant-level “Line Out” audio output, suitable for
connection to a tape recorder, modem, or computer sound card for recording or data-
decoding purposes. The front panel Volume control does not affect the output level at this
jack, which is 8 mV (rms) at 1 k
Ω
impedance.
EXT SP Jack Connections
An external loudspeaker may be connected to the rear panel’s EXT SP jack. The external
loudspeaker should have an impedance between 4
Ω
and 16
Ω
. Do not connect earphones
to this jack, as the output level is high enough to yield the potential for hearing damage.
ANT A
CAT
IF OUT
ANT
A B
+8V REC EXT SP
ANT B
MUTE
DC 13.5V
MUTE
Normally Open (N.O)
Transmmiter triggerd relay
Normally Closed (N.C)
Common
GND
8 mV (rms) at 1 k impedance
Ω
EXT SP (4 16
Ω ～ Ω
)
GND GND