Pulses; Waveforms - Wavetek 145 Instruction Manual

3.2.1.4
Convenion of SYNC OUT TTL to ECL 3.2.2 Pulses
The SYNC OUT TTL pulse can be converted to an ECL
pulse by rerouting two jumpers on the trigger/pulse printed
circuit board. Disconnect jumper at E24 and connect to
E25. Disconnect jumper at E27 and connect to E28. The
two jumpers are correctly routed from E25 to E26 and
from E28 to E29 for ECL operation. Instrument disassembly
is covered in paragraph 5.3.
See figure 3-4 for definition of controllable pulse character-
istics.
3.2.3 VVaveforrns
See figure 3-5 for definition of controllable waveform char-
acteristics.
FUNCTION
OUT
TRIG IN (GATE MODEi
GENERATOR BASIC
ty
W~VEFORM
!NOT OUTPUT)
GENERATOR BASIC
rt.J
WAVEFORM (NOT OUTPUTI
SYNC OUT
PULSE OUT,
NORMAL PULSE
TTL
ECL
TRIGGER LEVEL
ov
t
OUTPUT AMPLIFIER FIXED
DELAY~
I--
NORMAL PULSE
NORMAL PULSE
DELAYED PULSE,
OFFSET
I
-*-;
ov ---,-
I
I
rDELAY
-+j
~-WIDTH
-..i
'4-WIDTH
--+I
!+-WIDTH
-+I ..,.__ WIDTH
+
DC OFFSET--1
_J
ov
__!: ., j.-oELAY
WIDTH--+i..t:f i.-w1DTH ·
NOTES
DOUBLE PULSE,
OFFSET
SQUARE
WAVE
<fl.JI
-DC OFFSET
---1PERIOD1-----
1. Not Shown: TTL, TTL, ECL, ECL double pulse, delayed pulse and pulse.
2. Pulse period is determined by the generator frequency setting unless in trigger mode, in which case it is determined by
trigger frequency.
3. In trigger mode, just one period is generated for each trigger pulse.
DC offset plus pulse peak vo/'tage
>
I
7.5V
I
causes pulse clipping.
Figure 3-4. Pulse CharacttJristics
3-5