Fluke DDS Function Generator 271, Руководство пользователя

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271
Users Manual
Front Panel Connections
MAIN OUT
MAIN OUT
is the 50 Ω / 600 Ω output from the main generator. It will provide up to 20
V p-p into a high-impedance load or 10 V p-p into a matched 50 Ω / 600 Ω load. It can
tolerate a short circuit for 60 seconds.
Caution
To avoid risk of damage to the instrument, do not apply
external voltages to this output.
AUX OUT
AUX OUT
is a TTL/CMOS level output synchronous with
MAIN OUT
. Symmetry is the
same as that set for the main output but the phase relationship between
MAIN OUT
and
AUX OUT
is determined by the
PHASE
setting specified on the
TRIG
ger menu.
AUX OUT
logic levels are nominally 0 V and 5 V from typically 50 Ω .
AUX OUT
will
withstand a short-circuit.
Caution
To avoid risk of damage to the instrument, do not apply
external voltages to this output.
EXT TRIG
EXT TRIG
is the external trigger input for trigger, gate, sweep, FSK and hop operating
modes. It is also the input used to synchronize the generator as a slave to an external
master generator.
Caution
To avoid risk of damage to the instrument, do not apply
external voltages exceeding ±10 V to this input.
Rear Panel Connections
CLOCK IN/OUT
The function of the
CLOCK IN/OUT
socket is set from the
SYS
tem menu as follows:
INPUT
The socket becomes an input for an external clock.
OUTPUT
This is the default setting. The internal clock is made
available at the socket. When two or more generators are
synchronized the master is set to
OUTPUT
and the signal is
used to drive the
CLOCK IN
inputs of the slaves.
PHASE LOCK
When two or more generators are synchronized the slaves
are set to
PHASE LOCK
.
As an output the logic levels are nominally 1 V and 4 V from typically 50 Ω .
CLOCK IN/OUT
will withstand a short-circuit.
When used as an input the threshold is TTL/CMOS compatible.
3-2
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