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Page 2 VL-1000 Operating Manual
Installation
The proper, safe installation of the VL-1000
is not difficult to accomplish, using the guide-
lines to follow.
Caution!
Lethal AC and RF voltages are present
within the cabinets of the VL-1000 Lin-
ear Amplifier and VP-1000 Power Sup-
ply. Use extreme caution when open-
ing the cabinet(s) to perform any
alignment or adjustment steps, and
take particular care to inspect inter-
connection cables frequently to en-
sure that they are in good condition.
It is assumed that you possess tech-
nical knowledge and experience con-
sistent with your possession of an
amateur radio license; this knowledge
and experience are important tools
which will aid in the successful instal-
lation of this apparatus. Should you
have any questions about the safe in-
stallation of this equipment, consult
your Yaesu dealer or seek the assis-
tance of a professional installer.
AC Power Connections
(using VP-1000 Power Supply)
The VL-1000 is usually operated from 220
Volt (nominal) AC power. With 220 Volt input
to the VP-1000 Power Supply, full (1000 W)
power output will be obtained from the VL-
1000, while 117 Volt input to the VP-1000 is
possible at the 500 Watt power output level.
The advanced switching-regulator power
supply used in the matching VP-1000 Power
Supply does not require any transformer re-
wiring, nor any changing of a switch position;
the power supply will operate from either 220
or 117 Volt line voltages without configuration
changes.
However, the AC power cable/plug configu-
ration will be somewhat different, depending
on the country in which you purchased your
amplifier. In some countries, the VP-1000 is
shipped with the standard 220 Volt connector
appropriate for your location. In those areas
where there are multiple 220 Volt connectors
in common use, the VP-1000 is shipped with-
out the power connector; one may be obtained
at a local hardware or electrical supply store.
Pictorial diagrams of the common 220 and
117 Volt AC connectors in use are shown be-
low. When wiring your own connector, be ab-
solutely certain to observe the proper polarity
on the pin connections. Consult with an elec-
trician if you have any doubts about your wir-
ing!
Be sure that your house wiring is capable
of sufficient current capacity on the 220 Volt
circuit to be used, especially if this circuit is
shared with household appliances. It always
is preferable to operate the VL-1000 from a
dedicated 220 Volt circuit with its own circuit
breaker.
Transceiver or Exciter
Interconnections
The interface wiring to the transceiver or trans-
mitter which drives the VL-1000 consists of:
(A) A 50 Ω coaxial cable for carrying RF drive
power from each exciter to the amplifier;
(B) A 2-conductor transmit/receive control
cable which provides a closure to ground
signal from the transceiver to the amplifier
during transmission;
(C) A (supplied) 2-conductor ALC (Automatic
Level Control) line, used to limit the drive
level from the exciter to the amplifier; and
(D) When using a compatible Yaesu trans-
UK Plug Australian
Plug
European
Plug
USA
Plug
(viewed from plug prong side)
VP-1000 AC Cable wiring
(European version)
(U.S.A version)
4


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