Notes On Operation - Wavetek 801 Instruction Manual

GATE DBL - As for GATE except two pulses occur
for each pulse period. Time to second pulse is set by
0
5
.
0
2 TRIGGER Switch - Selects one of three trigger
methods: manual, an external trigger signal' s rising
edge or an external trigger signal' s falling edge. The
external trigger signal is applied at
LEVEL Control - Inner knob sets acceptance thresh-
old for trigger signal at @
0
MAN TRIG Switch - Supplies a trigger with a dura-
3
tion that equals the time the switch is held down.
Output depends on the mode selected (see @ ).
TRIG Indicator - An LED which lights approxi-
mately 100 ms for each trigger signal accepted.
0
___ 4 PERIOD/RATE Switch - Selects one of seven ranges
of pulse period. Calibrated in seconds and hertz.
VARIABLE Control - Varies the pulse period within
the range selected by the outer knob. Clockwise in-
creases the pulse period and decreases frequency.
0
DELAY Switch - Selects one of seven ranges of
- -
pulse delay, time to second pulse of double pulses
or length of burst, depending on mode setting. OFF
position ensures minimum delay.
VARIABLE Control - Varies the delay time within
the range selected by the outer knob. Clockwise in-
creases the delay.
0
WIDTH Switch - Selects one of seven ranges of pulse
6
width or an approximate 50% duty cycle.
VARIABLE Control - Varies the pulse width within
the range selected by the outer knob except ins.
0
LOWER LEVEL Control - Outer knob sets the
7
lower level of the 5Os2 OUT pulse, which may be
--
varied from -20 to +20 volts into an open circuit
or -10 to +10 volts into a 5052 termination. Maxi-
mum pulse height is 20 volts open circuit.
UPPER LEVEL Control - Inner knob sets the upper
level of the 5052 OUT pulse. Upper level range is
identical to that stated for the lower level.
0
8
erator. Pulses from this output may be controlled in
level and transition time as well as frequency and
width.
0
0
0
.
0
0
0
3.2
ECL Connector-An output with an emitter-coupled-
logic level pulse whose occurence and duration are
controllable. Levels are -1.8V quiescent, -0.9V
active.
OUTPUT Switch - Selects a normal pulse or its
complement which swaps the active and quiescent
levels. Affects all outputs, except SYNC,
ECL Connector - An output like the ECL out-
except active and quiescent levels are
p u t @
reversed.
32 TTL Connector - An output with a transistor-tran-
sistor-logic level pulse whose occurence and duration
are controllable. Level is < 0.4V quiescent, > 2.4V
active into a 5Ost termination.
13 TRAILING EDGE Control - Varies the duration of
the 5Oa OUT pulse trailing edge. Duration range is
set by 1 Clockwise rotation increases edge
.
time. Full cw exceed upper value of the selected
range. Trailing edge time is not part of WIDTH time.
SYNC Connector - An output with a pulse of OV
to > 0.5V into 5Oa termination and a square wave
when the generator is in a continuous mode (see
0
). In other modes, width is determined by the
1
time between initial transition of the trigger signal
through the trigger level to the trailing transition.
1 5 LEADING EDGE Control - Same as
varies the duration of the leading edge of the SOS2
OUT pulse. Leading edge time is part of WIDTH time.
1 6 TRIG INPUT Connector - Accepts an external
signal to trigger the generator. Triggers on rising or
falling edge of input as determined by @ . See
paragraph 1.2.3 for input specifications.
0
17 TRANSITION TIME Switch - Selects one of seven
ranges for 5Oa OUT pulse rise and fall durations.
Actual durations within a range are set by @
and
.
0
POWER Switch - Pulse generator on/off switch.

NOTES ON OPERATION

Operational modes are described in paragraph 3.1 under the
mode switch. The pulse itself may be shaped in width,
leading and trailing edge transition times, upper level, lower
level, frequency of occurrence (period) and delay with
0
13 but
3-3