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Model 7044B/7045B
Section I
SECTION I
INTRODUCTION
1.1
DESCRIPTION.
1-2.
BASIC FRAME,
1*3.
The Hewlett-Packard Models 7044B and 7045B X-Y
Recorders are designed for the laboratory user to plot
cartesian coordinate graphs from do electrical information.
The 7044B or 7045B will satisfy the needs of the user
seeking reliability and dependability. The 7045B recorder
features high speed capability and rapid acceleration to
accurately record high-frequency and fast-moving input
signals. It also offers a RESPONSE switch which allows
the user the choice of a fast or slow response. Both models
are equipped with the newly designed, continuous duty,
aluminum framed dc servo motor; the X-axis of the 7045B
contains the larger, faster motor. This design concept ends
overheating or wear if the pen is driven offscale for an in¬
definite time. Other features found on the 7044B and
7045B include 14 calibrated dc input ranges in each axis
from 0,5 mV/in. (0.25 mV/cm) to 10 V/in. (5 V/cm), TTL
Remote Control, and a Rear Connector. Arbitrary full
scale voltage ranges may be established with a variable input
vernier in conjunction with the calibrated dc ranges. A.
trouble-free electrostatic hold-down platen capable of hold¬
ing chart paper up to 11 x 17 inches and the standard
European A3 size, a disposable pen with four color choices,
and plastic coated wirewound balance potentiometer are
also provided on both models. Latest circuitry design and
assembly techniques have also been incorporated into both
models, thereby reducing failure and maintenance time.
Additionally, both recorders can be equipped with such
options as Time Base, Event Marker, or Metric Scaling.
See Figures 1-1 and 1*2 depicting the standard 7044B and
7045B models.
1-4.
MODEL - MANUAL INFORMATION,
1-5.
The contens of this manual apply to recorders with
the serial number prefix(e$) listed under SERIAL NUMBERS
on the title page. The serial prefix is the first four digits
and a letter of a two-part, ten-item serial number (0000A-
00000) used to identify each Hewlett-Packard instrument
(see Figure 1-3). Should any change to this manual be'nec¬
essary, a new serial prefix will be assigned to the changed
model and a change sheet (Manual Change) will be supplied
defining the differences between the changed model and
the one described within this manual. Other corrections
due to any errors that existed when this manual was printed
will be provided. This type of change, called Errata, also
appears on the change sheet (Manual Change). For addi¬
tional information pertaining to these recorders, or other
SERIAL
NUMBER PREFIX
SERIAL NUMBER
7044-R-2-I
Figure 1-3. Instrument Identification
Hewlett-Packard instruments, contact the nearest Hewlett-
Packard Sales/Service Office.
1-6. SPECIFICATIONS.
1 -7.
Table 1-1 lists the specifications and accessories sup¬
plied or available with the 7044B and 7045B models. Fig-
gure 14 illustrates the outside dimensions. Option specifi¬
cations are also defined in this section.
1-8. SAFETY SYMBOLS.
1-9.
The following safety symbols are used with this Oper¬
ating and Service Manual.
The WARNING sign denotes a hazard.
It calls attention to a procedure, prac¬
tice, or the like, which, if not correctly
performed or adhered to, could result
in injury or loss of life. Do not proceed
beyond a WARNING sign until the in¬
dicated conditions are fully understood
and met.
The CAUTION sign denotes a hazard.
It calls attention to an operating pro¬
cedure, practice, or the like, which, if
not correctly performed or adhered to,
could result in damage to or desctruc¬
tion of part or all of the equipment.
Do not proceed beyond a CAUTION
sign until the indicated conditions are
fully understood and met.
1-1
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