Wavetek 801 Instruction Manual page 3

Fixed (ECL, ECL, TTL) Pulses
Pulse levels for 5On loading as shown:
ECL
ECL, ECL Transition Time: < 6 ns.
T T L
TTL Transition Time: < 10 ns.
Sync Pulse
Sync pulse is 0 to at least +1V from a
Normal/Complement Control
Normal pulse or its complement is selected. The normally
quiescent and active levels are reversed in complement
format. This control affects all outputs except sync pulse.
Time Domain
1.2.3
Period range is from less than 20 ns to greater than 200 ms
in 7 overlapping ranges.
Period jitter is less than 0.1% plus 50 picoseconds.
Width
Width range is from less than 10 ns to 100 ms in 7 over-
lapping ranges. Maximum duty cycle is 70% for periods to
200 ns, decreasing to 50% for 20 ns periods. Range switch
also has a square wave detent
50 +15% at 20 ns period.
Width jitter is less than 0.1% plus 50 picoseconds.
Sync pulse duty cycle is 50 24% of pulse period to 2 pus
period, changing to 50 +I 5% at 20 ns period except in
trigger and external width modes, in which case it is deter-
mined by the trigger signal.
Transition Time
For variable amplitude pulse only. Independently adjustable
leading and trailing edges from less than 7 ns (5 ns typical)
to 250 ms in 7 overlapping decade ranges (measured from
10 to 90% points). Verniers give 50:1 adjustment on all
ranges except 5 ns, which gives 25: 1.
Linearity: For transition greater than 10 ns +5% between
10 to 90% points on pulse.
l - 2
source.
( % ).
Delay
Pulse occurrence can be delayed from less than 10 ns to
100 ms with respect to the sync pulse. Maximum duty
cycle is 70% for periods to 200 ns, decreasing to 30% for
20 ns periods.
Delay jitter is less than 0.1% plus 50 picoseconds.
Fixed delay is as shown:
TRIGGER INPUT
F I X E D DELAY4 b -4Ons
SYNC PULSE
FIXED DELAY --+( k ~20 ns
VARIABLE
AMPLITUDE PULSE
Input Characteristics
1.2.4
External Trigger
The external signal required to trigger the generator has a
minimum amplitude of +200 mV p-p to 5 MHz increasing
to k600 mV p-p to 50 MHz (from 5Oa source) and a maxi-
mum amplitude of +lOV with a minimum width of 10 ns.
Input impedance is approximately
22 pF
Triggering is selected to occur at either rising or falling edge
of trigger signal; triggering level is adjustable to be between
external and manual trigger occurrence accepted.
1.2.5 General
Environmental
Specifications apply at 25°C *5" C after
Instrument will operate from 0°C to 50°C.
Dimensions
28.8
cm (11.4 in.) wide; 17.3 cm (6.8 in.) high; 29 cm
(11.4
in.) deep.
Weight
5.4
kg (12 lb) net; 7.3 kg (16 lb) shipping.
Power
90
t o 1 10V , 108 to 132V, 180 t o 220V or 216 t o 250V;
50 t o 400 Hz; 60 watts nominal.
TRIGGER LEVEL
1
1
1
hour warm-up.