Wavetek 801 Скачать руководство пользователя страница 3

Fixed (ECL, ECL, TTL) Pulses

Pulse levels for 

 loading as shown:

ECL

 

 

  -0.9V

 

 

 

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.

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 

 source.

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.

1.2.3 

Time Domain

Period range is from less than 20 ns to greater than 200 ms

External Trigger

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 

 ).

 duty cycle is 50 

 to 2 

  p e r i o d   c h a n g i n g   t o

50 

 at 20 ns period.

Width jitter is less than 0.1% plus 50 picoseconds.

Sync pulse duty cycle is 50 

 of pulse period to 2 

period, changing to 50 

 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 

 between

10 to 90% points on pulse.

Fixed delay is as shown:

1.2.4

TRIGGER LEVEL

TRIGGER INPUT

F I X E D  

 

 

SYNC PULSE

 1

FIXED DELAY 

 

 ~20

 ns

V A R I A B L E
AMPLITUDE PULSE

Input Characteristics

The external signal required to trigger the generator has a

minimum amplitude of 

 mV p-p to 5 MHz increasing

to 

 mV p-p to 50 MHz (from 

 source) and a maxi-

mum amplitude of 

 with a minimum width of 10 ns.

Input impedance is approximately 

 in parallel with

22 pF

Triggering is selected to occur at either rising or falling edge

of trigger signal; triggering level is adjustable to be between

 An LED lights for approximately 100 ms for each

external and manual trigger occurrence accepted.

1.2.5 General

Environmental

Specifications apply at 25°C 

 after 

hour warm-up.

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 1 0 V 108 to 132V, 180 t o 220V or 216 t o 250V;

50 t o 400 Hz; 60 watts nominal.

l - 2

Содержание 801

Страница 1: ...O PRIETARY TO WAVETEK THE INFORMATION IN THIS DOCUMENT IS NOTTOBE USEDFOR DUPLICATED IN ANY MANNER WITHOUT THE PRIOR APPROVAL IN WRITING OF WAVETEK SAN DIEGO 9045 Balboa Ave San Diego Calif 92123 P 0...

Страница 2: ...er of pulses may be triggered for a burst output Manual and external triggering is indicated by an LED on the front panel for rapid visual set of trigger level Trigger Burst External trigger starts in...

Страница 3: ...rigger 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 th...

Страница 4: ...ger edge appears see then pulses occur until the trigger signal transverses the generator trigger level again EXT WIDTH DC level at all outputs until a suitable trigger appears see then a pulse occurs...

Страница 5: ...OUT 50 DUTY TIME WHEN TRIGGERING IS INTERNAL I I N DELAY LEADING EDGE 1 TRANSITION TIME I I b WIDTH B F WIDTH e UPPER LEVEL TRAILING EDGE TRANSITION TIME LOWER L E V E L LOWER L E V E L J UPPER LEVE N...

Страница 6: ...escribed in paragraph 3 1 under the erator Pulses from this output may be controlled in mode switch The pulse itself may be shaped in width level and transition time as well as frequency and leading a...

Страница 7: ...Terminations Only 5OQ RG58U cable should be used to connect the 801 to the circuit under test A 5OQ 2W load should be used at the circuit end of the cable for maximum pulse fidelity The 5Oa terminati...

Страница 8: ...criptions of operation observe the pulse on an oscilloscope When the 5Oa OUT pulse is not desired disregard leading and trailing edge adjustments See figure 3 2 for pulse parameters 3 3 1 Continuous P...

Страница 9: ...ulse Period 3 3 7 Continuous Double Pulses For continuous double pulses set the controls as follows Control MODE OUTPUT Operation CONT DBL NORM or COMP if inverted pulse is desired WIDTH DELAY Set as...

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