Right Side Panel; Rear-Panel Switches; Preparing The Hp 7090 For Use - HP 7090A Operator's Manual

The following auxiliary connectors are available on the right side panel:
1. GROUND:
ground when required.
2. SCOPE OUT
buffer contents to an external oscilloscope.
3. EXT PEN:
versus-chan3, direct recordings. A falling TTL level or contact closure to
ground applied to the connector lowers the pen; a rising
opening the ground contact raises the pen.
4. EXT TRIG:
trigger mode selected and a trigger search in effect, a falling
or contact closure to ground applied to the connector triggers the
recording.
I
ISO/ANSI
1.
(ANSI) paper fonnat.
•
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2. LISTEN ONLY/NORMAL
able or Iisten-only mode when interfacing the HP 7090.
I
3. ADDRESS
facing the HP 7090; factory-set to 5.
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Preparing the HP 7090 for Use

Setting up your HP 7090 is a simple procedure that consists of loading pens
into the carousel, inserting the carousel into its receptacle, turning on the
power, and loading the plotting medium. This section describes these
procedures.
To obtain plots of the highest quality, it is important to use pens and media
that are matched to your application. The fiber-tip pens provided with your
HP 7090 are designed for use with standard plotter paper. The top of each
HP plotter pen is marked with a letter and number in a calor that matches
the pen's ink. The letter denotes the media intended for the pen ("P" for
paper; "T" for transparency pens, which are also available). The number
specifies, in tenths of millimetres, the approximate width of the line that
the pen will draw.
The plotter paper provided is designed to provide clear line definition and
minimize distortion, skipping, and pen "bleeding." A 24-hour recording
paper is also available (see Appendix
bleeding when plotting direct recordings of extended duration.
Plots can also be produced on transparency film using HP transparency
pens, although a pen speed slower than that used for front-panel plotting
Provides ground connection to the signal source chassis
(vertical and horizontal): Provides analog output of selected
Provides external pen control during manually-triggered,
Provides external triggering of recordings. With the external
Paper Format Switch:
Address Mode
Used to set the HP-IB address switch when inter­
Switches:
Scans by ArtekMedia © 2007
TIL
Used to select metric (ISO) or English
Switch: Used to select the address­
D), and can be used to further reduce
Instrument Description and General Operation

Right Side Panel

level or
level
TIL

Rear-Panel Switches

Choosing the
Correct Pen
and Medium
2-9