Tektronix 110 Instruction Manual page 5

The Tektronix Type 110 Pulse Generator and Trigger
Takeoff System is two instruments in one: a fast-rise pulse
generator and a trigger takeoff system. The fast-rise pulse
is generated by means of a high-repetition-rate mercury re-
lay. The trigger takeoff system provides an efficient method
of deriving triggers from incoming signals for use in trig-
gering external equipment.
The Type 110 is designed to be used with 50-ohm nano-
second pulse systems. The Type 110 serves independently
the two functions of pulse generation and an oscilloscope
trigger source. Although the Type 110 can be used with
most oscilloscopes, the large regenerated trigger output is
designed especially to suit the Tektronix Sampling System.
The system, when used with the Type 110, consists of the
Type 113 Delay Cable, the Type N Sampling Plug-In Unit,
and a Tektronix plug-in type oscilloscope.
The design of the Type 110 includes a high degree of in-
herent flexibility so that it may be used
wit~,
other systems
or devices. That is, wherever a fast-rise pulse and/or sig-
nal-derived trigger source is needed. The trigger can be
efficiently derived from the pulse generator section of the
Type 110 or from an external signal source without signi-
ficantly disturbing the signal itself.
fig. 1-1. A double exposure photograph of the output pulse
from the Type 110 (no external charge line) and a 1 gigacyclel
sec timing train. The waveforms are displayed on a Tektronix
0.12 nsec risetime research-type oscilloscope. This photograph
shows the risetime to be well under 0.25 nsec. The minimum
pulse width is approximately 0.5 nsec. Note the freedom from
overshoot.
50 ohms.
720 pulses per second nominal, free running or line sync.
Unequal charge lines produce alternate pulses of differ-
ent time durations (see Fig. 1-2).
External charge voltage permits alternate pulses of dif-
ferent amplitudes and/or polarity.
+50 volts maximum calibrated output on internal power
supply; +300 volts maximum allowed from external
sources.
less than 0.25 nsec (nanosecond or 10-
9
second). Photo-
graph of pulse is shown in Fig. 1-1.
From approximately 0.5 nsec to a maximum of 40 nsec at
720 cps; a maximum of 300 nsec at 360 cps using a sin-
gle contact (unused contact is disconnected from power
supply). Pulses longer than 0.5 nsec obtained with external
charge lines.
®
fig. 1-2. The alternate pulse feature is used to show a short (no
charge line) and a long pulse (20 nsec charge line) being gen-
erated by the Type 110. Note that there is no appreciable wave-
form discontinuity due to the addition of a charge line.
1-1