Philips PM 5715 - Page 3

1. Introduction
The
PM
5715
generates
high-quality pulses at
a
repetition frequency of
1 Hz
to
50MHz
and rise
and
falltime being
independently
and
con-
tinuously
variable between
6ns and 0.5s.
All of the other
important pulse
parameters,
such
as pulse
delay, duration and
amplitude.
are also variable within
a
wide range.
Normal or inverted pulses with positive or
negative polarity, double pulse
generation
and
variable d.c. offset are other
versatility para-
meters provided by the
PM
5715.
The variable
transition
time combined with a
second TTL matched output make the
PM 5715
particularly useful when testing or simulating
TTL circuits. Square wave generation and pulse
shaping facility extend
the
range of useful ap-
plications.
2. Technical
data
Numerical
values
without
tolerances
are in-
tended for
information
purposes
only
and in-
dicate
the properties
of an
average
instrument.
Properties expressed
in numerical values with
The
numerical values
hold
good for
the nominal
statement of tolerances
are guaranteed.
mains
voltage.
ELECTRICAL
Internal
triggering
Repetition
rate
1Hz...50MHz
Variable
in 8 ranges
with continuous
control
within
the ranges
Jitter
<
0.1
%
or 50ps whichever is greater
Temperature coefficient
<0.3%/°C
External
triggering
Triggering: input
voltage
> +
1
V
to
trigger
the
generator
max. voltage
+
12V
frequency
input
0...50MHZ
impedance
approx.
1
kQ
In
mode
T/2 the pulse
duration is
deter-
mined by
the
driver input.
In
mode
single or double
the delay,
and
pulse
duration are set by
front panel con-
trols.
Synchronous gating:
input
voltage
>
+
1
V to gate the
generator
impedance
approx.
1
kQ
Gating signal turns generator "off”.
First
pulse coincides with trailing edge of
the
gating
pulse.
Delay
from trigger (or gate) input to main
pulse output with pulse delay set
to
10
ns
approx. 50ns
Single shot operation Single
shot
facility
by means
of push-button
Sync,
output Square wave, amplitude
+1.5V into
50Q
(
+
3V open
circuit)
Source impedance:
50Q
Pulse
occurs approx. 40ns
ahead of the main
pulse with
pulse delay
set to
10ns.