Philips -- PM 3050 -- Datasheet
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Equipment information

Philips PM 3050 Oscilloscope
Model: PM 3050
Category: Measurement instruments
Group: Oscilloscope
Description: 60 MHz 2 channel, single time base Oscilloscope
                                    The New 60/100 MHz Standards
The PM 3050 to PM 3070 series of oscilloscopes set new
standards in the 60 to 100 MHz oscilloscope range. A new
standard in convenience and ease of use together with a new
price/ performance standard for instruments of this class.
The series consists of four models which are all optionally
available in rackmount versions for systems use. These are;
• PM 3050 60 MHz 2 channel, single time base
• PM 3055 60 MHz 2+1 channel, dual time base
• PM 3065 100 MHz 2+1 channel, dual time base
• PM 3070 100 MHz 2+1 channel, dual time base with clever
Each unit represents a significant step forwards in 'scope
technology through their use of microcomputer control to
both speed up and simplify the task of signal measurements.
Standard features in all models include AUTOSET for single
push button set up; a large backlit LCD showing all
operating parameters: fast up/down rocker keys and cold
switching for high reliability.
Measurements In Seconds
Just press the green AUTOSET button and automatic setting of
channel amplitude, time base sweep speed and triggering
takes place, for any signal. If only one channel is
connected only one channel is displayed but if both channels
are being used then both are automatically scaled and
displayed. Triggering takes place on the lower frequency
channel to give a clear jitter free display. AUTOSET
eliminates time consuming manual range finding and
adjustment to give fast accurate results at the touch of one

Clean and Simple Operation.
With up/down rocker keys for amplitude and time base speed
selection and pushbuttons for display mode and trigger
source selection the operation of this series of
oscilloscopes is kept clean and simple. Upon each user
action the backlit LCD display is immediately updated making
at a glance review of the 'scopes current parameter settings
possible rather than having to search the complete front
panel to determine the operating conditions.
The internal microcomputer prevents illegal setups like
incorrect main and delayed timebase settings and clearly
identifies on the display noncalibrated amplitude settings
or grounded inputs. This avoids incorrect measurements,
wasted time and frustration.
To speed accurate measurements when using the delayed time
base, the LCD gives a digital readout of the delay time so
making the calculation of MTB sweep speed x delay time
vernier redundant. For infrequent 'scope users the MENU key
functions as a 'help' key showing the facilities offered by
each key on the ’scope and quickly aquainting the user with
its operation.
High Reliability and Easy Service
Behind the push button operation all input signals are
switched by hermaticaliy sealed long life reed relays. These
keep out damp and dirt from the active signal paths and
ensure long life and long term measurement stability.
The advanced modular construction of these 'scopes allows
complete functional testing of each subassembly before they
are built together to form a complete instrument. An
extended burn in period lasting 48 hours then follows before
another series of extensive tests takes place. This ensures
that zero hour defects are almost completely eliminated and
results in long term trouble free operation. In the unlikely
event that a failure should occur the modular construction
enables easy access to the suspect board without major

Advanced CRT
With 16 KV acceleration and advanced electron optics the CRT
display has exceptional brilliance combined with a small
spot size maR^"- ing it ideal for measurements on high speed
or low repetition rate signals. The effective screen area is
a full 8x10 cm. An internally etched graticule is provided
for accurate and parallax- free measurements. Graticule
illumination is standard on all models.

Fast Computer Hook Up
For systems use this Smart Scope series can be simply
controlled by the GPIB/IEEE-488' bus using the PM 8953A
interface. This retrofittable interface enables the ’scopes
to be automatically
set up for production testing or QA applications.
As the PM 8953A IEEE-488 interface is a separate unit which
simply plugs onto the rear of the ’scope it is extremely
interesting for fleet owners as it permits automatic IEEE
based recalibration of the complete fleet with only one
interface needing to be purchased, so saving time in
recalibration, and money as well.

Clever Cursors
The PM 3070 offers full cursor measurement capabilities in
both time and amplitude axes. Control of all cursor
functions is by five keys in the bezel of the CRT which also
are used to independently control the intensity of the
alpha- numerics and the cursor intensity. Accurate
measurements of peak-peak values, voltage ratios, rise
times, phase relationships and time ratios are possible with
direct numerical display on the CRT.
A special facility called the ZOOM function enables the
signal between the cursors to be expanded to fill the full
width of the screen by automatically adjusting the delay
time and delay time base speed. This makes it easy to zoom
in on a particular point of interest without having to
consider how to set up the delay time section. In addition
to the measured data both channel and time base status is
displayed on screen and user text or messages can also be