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A time, delayed sweep, and large screen CRT 1746A
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The HP 1740A and 1742A have proven
to be highly reliable measurement
tools by passing the toughest test
possible—years of use by satisfied
customers. The 1740A continues to
perform year after year in a variety
of environments and operating
conditions. This record of
reliable performance, coupled
with a versatile feature set
and highly competitive pricing,
"E с 4 ut Ë offers an exceptional value for
SD Жо | de the user of 100 MHz oscillo-
: scopes.
The 1740A/1742A provide
measurement features which
users have found to be particu-
| AN AN ~ larly valuable. Both vertical
E ОА uu a channels provide 1 mV/div
deflection factors from dc to
40 MHz, the full 100 MHz
performance is achieved with
| 0 Á deflection factors of 5 mV/
| @ ] 1740A OSCILLOSCOPE 38 div to 20 V/div. Third channel
trigger view, first offered in the
1740A, permits simultaneous viewing and timing of the external trigger signal with both vertical channels. A X10 |
horizontal magnifier provides main and delayed sweep speeds to 5 ns/div . . . to allow full use of the 1740A/1742A’s 100 к
MHz bandwidth amplifiers, which have a Gaussian roll-off characteristic for accurate pulse response. |
The 1740A/1742A also offer a TV/video sync option that allows a variety of measurements to be made on complex video
waveforms, and an optional auto-ranging DMM with 3-1/2 digit resolution for ac/dc voltage, ac/dc current, and
resistance measurements. |
The 1742A incorporates HP's dual-
marker, delta time measurement °
system; adding an optional, built-in, 3-
1/2 digit, autoranging DMM to the
1742A provides a direct readout of
time interval measurements. The 1742A
has the same front panel as the 1740A
except that the 1742A replaces the
1740A’s Delay control with several
delta time controls.
The most critical component in an
oscilloscope is the cathode ray tube
(CRT). The 8X10 cm 1740A/1742A CRT
has been perfected to the point where
it has been described as having “the
brightest, crispest trace in the
industry.” Since the CRT is also the
most expensive part of an oscilloscope,
it is imperative that it be extremely
reliable. With the 1740A/1742A, HP’s
CRT improvements have led to less
than 1.4 failures per year per 1000
instruments—believed to be the best
e Lele Figure 1— 1740A/1742A CRT - this 8X10 cm CRT has been described as having the
reliabi lity record of any comparable brightest, crispest trace in the industry, and has an outstanding reliability record of
CRT in the industry. 1.4 failures per 1000 1740A's per year.
Both the HP Model 1745A and 1746A
oscilloscopes add a large screen CRT
and a revised front panel to the time-
tested design of the 1740A/1742A.
The new CRT offers a 43% larger
viewing area while maintaining the
high standards of the 1740A's trace
quality. This provides more resolu-
tion for more accurate measure-
ments, especially with three-
channel measurements that use
trigger view.
Voltage measurements are also
simplified. The CRT graticule is
10X10 divisions instead of 8X10
divisions. Full-scale voltage
display is ten times the deflec-
tion factor — reducing the
amount of mental arithmetic
required by the user.
The 1745A and 1746A both
offer a new contrast screen
which is treated with pro- 78
prietary antireflection coating. <a DE Un
— You obtain bright, sharp trace | Ns
- definition without annoying light |
- reflections. To match the new contrast screen, the color coding of the controls has also been changed. The dark buttons
control the display functions while all trigger functions are medium gray. Miscellaneous functions are light gray, and all
| delayed sweep functions
are highlighted with a
shaded background.
The 1746A adds HP's dual
marker delta time
measurement capability
to the 1745A for faster
and more accurate timing
measurements. When
combined with the
optional DMM a direct
readout of time interval
measurements is
provided on the LED
display. For R&D and
production applications,
the 1746A with optional
DMM offers high
resolution waveform
viewing, accurate time
interval, ac/dc voltage,
ac/dc current and
resistance measurements.
Figure 2 -1745A/1746A CRT - the 9.5x12 cm, 10x10 division 1745A/1746A CR T provides 43% more
. viewing area than does the traditional 8x10 cm CRT, and it has a sharp trace for increased
resolution and accuracy. Also, a neutral density contrast screen reduces reflections and
enhances brightness.
Figure 3 - third channel trigger view
provides a display of the trigger
signal along with the two vertical
channels. The center horizontal
graticule line represents the trigger
level. For multichannel timing
measurements, the external trigger
delay relative to the vertical channels
is 53.5 ns
In many measurements, especially
in digital applications, it is desirable
to trigger the main sweep
externally using a signal
synchronous with the displayed
waveforms. The third channel
trigger view offers several
measurement conveniences in
timing applications:
e The trigger threshold can be
viewed relative to the trigger
waveform for either an internal or
external trigger source. Trigger
threshold is the center horizontal
graticule line,and the trigger point
is selected by positioning the
trigger waveform vertically on the
reference graticule line using the
Main Sweep Trigger Level control.
This also allows you to view the
shape of the trigger waveform to
verify that the correct signal is used
as the trigger source and that the
trigger threshold is not set to
portions of a waveform containing
irregularities and reflections.
e With trigger view, three channels
of information are displayed so that
timing relationships can be
analyzed. The displayed trigger
signal has a specified delay of
‚ +3.5ns relative to the two vertical
Stable internal triggering to greater
than 100 MHz requires only one
division of vertical deflection. The
internal trigger signal is picked off
immediately after the attenuator
which assures a stable display
regardless of changes in position,
vernier, or polarity controls. Easy to
use pushbutton trigger controls
assure you of the desired trigger
signal conditioning for your
measurement applications. In the
external trigger mode, signals of
only 100 mV trigger the
oscilloscope to 100 MHz, only 50
mV to 50 MHz. In the composite
trigger mode, the oscilloscope
internally triggers on asynchronous
signals. This allows stable simul-
taneous viewing of asynchronous
logic signals such as those in a
computer interface.
For maximum measurement
flexibility, switchable 50Q and
1MQ inputs are provided. The
internal 500 input with low
reflections eliminates the need for
an external 500 coaxial
feedthrough termination and :
provides optimal pulse response.
Figure 4 — the composite trigger mode produces a stable display of two asynchronous
signals, such as in data lines between a computer and a peripheral.
Using this method time interval measurements can be performed with the
1740A, 1742A, 1745A, or 1746A. Time interval measurements can be
performed with accuracies approaching +1% as shown in the following
steps. |
To measure a pulse rise time, the intensified marker is placed over the
rising edge by adjusting the delayed sweep speed to obtain the proper
marker width and the delay time helidial pot to obtain the proper marker
position (Figure 5).
The rising edge display is then expanded to full screen by selecting the
delayed sweep mode (Figure 6). The volts/div vernier is adjusted so that — Figure 5
the waveform is aligned with 0%, 10%, 90%, and 100% levels. With the |
1745A/1746A large screen CRT, the 0% level is positioned on the bottom
graticule line and the 100% level on the top graticule line providing ten
divisions of deflection. The 1740A/1742A CRT provides markings for the 0%
and 100% levels with six divisions of deflection. A zero time reference is |
NO : . . 90% POINT —
set by positioning the 10% level on a graticule crossing with the delay time
helidial pot. Read and record the helidial setting as t10%. Rise time is then
measured by positioning the 90% point at the zero reference (tggeg) and
performing the calculation:
(tg0%-t10%) X main sweep time/div X 10
The delay time helidial range is 0.000 to 0.999.
The 1742A/1746A use HP's dual marker AT method to enhance the |
© accuracy and speed of time interval measurements. To measure a pulse Fi
N width, simply perform the following steps: igure 6
Position the start and stop markers on the rising and falling edges with the
delayed sweep speed, start control, and helidial stop control (Figure 7).
Expand the rising and falling edges to full screen by selecting the delayed START MARKER STOP MARKER
sweep mode. Adjust the helidial stop control to overlap the traces at the Ш
50% point (Figure 8). The answer is then obtained in one of three ways:
1) Multiply the helidial stop control setting by the main sweep speed to
obtain the answer. With this method, accuracy is approximately the same
as with the single marker method, but the measurement is easier and less
error prone because there is no subtraction required. |
2) The 1742A/1746A have a rear panel voltage output which is scaled to
represent the time interval between the start and stop markers. Using an
external DMM to measure this voltage yields a direct readout of the
time interval. This method is both easier and more accurate, Figure 7
approaching accuracies of £0.5%. a.
3) When the Option 034/035 DMM is added to the 1742A/1746A, the
scaled voltage is measured directly by selecting the DMM time interval
mode. Again measurement convenience is improved with an accuracy
approaching + 0.5%.
In the dual marker mode, time interval measurements can be made from
Channel A to Channel B or from Channel B to Channel A when the alternate
display mode is selected. A convenient switch lets you select whether the start
€ ‘marker is on Channel A or B.
-———50% POINT
In the three channel trigger view mode, the start marker is displayed on
the trigger channel with time coincident stop markers on each of the
other two channels. This allows direct readings of time intervals between
events on either channel and the external trigger input signal. Figure 8
—— ;— ООН ООО
Adding an optional 3-1/2 digit
autoranging DMM improves the
convenience of your basic
measurement capabilities. With the
optional DMM, you can make the
five most common measurements:
ac/dc voltage, ac/dc current, and
resistance. The DMM has
autoranging so that readings always
have the same multiplier: voltage
in volts, current in amperes, and
resistance in kilohms. In addition,
the DMM has auto-zero which
eliminates the need to zero the
instrument prior to a test and auto-
polarity for measuring either
positive ог negative voltages
without reversing test leads.
With this option you can trigger on composite video for analysis of fields,
test signals, timing relationships, lines, or segments of lines. This capability
is provided through a TV sync separator circuit that triggers the main
sweep on the vertical interval of a composite video waveform and triggers
the delayed sweep on individual horizontal lines.
In the 1742A/1746A, the optional
DMM improves the accuracy and
convenience of delta time
measurements. À switch on the
1742A/1746A lets you select DMM
operation or direct delta time
readout. | €
Figure 9 — the modulated stairstep test signal is easily displayed with the TV/Video
Sync option. For detailed analysis, single line scan can be used to examine expanded
portions of this waveform.
Figure 11 — the optional DMM
provides measurements of ac/dc
voltage, ac/dc current, and resistance
and improves the accuracy and
convenience of time interval measure-
ments on the 1742A/1746A.
To aid in viewing specific portions of composite video waveforms, the TV
sync option includes field select, TV line scan, and single line scan
capabilities. Field selection is easily accomplished by pressing the Field
Select button which automatically displays the alternate field in the frame.
The TV Line Scan (1740A/1742A) or Delay Time Control (1745A/1746A)
allows you to position the intensified marker to the desired location for
expansion. When switched to delayed sweep, individual lines are easily
inspected and measured. For precise control of highly expanded line
segments, single line scan lets you examine one line in detail. With the
1740A/1742A the TV/video sync option is installed internally, and the
channel B 50 Q input is changed to 75 (À to match most video signals.
Channel B is provided with a TV damp.
By adding an HP Model 10023A
Temperature Probe to the optional
built-in DMM, you can make fast,
accurate temperature
measurements by simply pressing a
button, touching the surface to be
measured, and reading the
temperature in degrees Celsius
directly on the DMM. The probe’s
temperature sensor has a very low
thermal mass so that measurements
can be made quickly and heating
Figure 10a - in the 1745A/1746A the Figure 10b - three signal outputs on
TV/video sync option is installed on the back panel of the TV/video sync and cooling changes are closely "x
the top cover and provides its own option provide access to the video tracked 6
signal input with a 75 N termination signal, the main trigger signal and the `
to match most video systems. The
input also provides a TV clamp which
eliminates position shift due to
varying levels of video information.
delayed trigger signal. These signals
are routed to a vertical channel, the
main trigger input, and the delayed
trigger input to view video signals.
The HP 1740-series oscilloscopes’ selectable 1 MQ or 50 ( impedance inputs coupled with HP’s full line of probes
allow you to select the optimum input impedance for maximum pulse fidelity and minimum circuit disturbance.
HP’s miniature oscilloscope probes
easily access test points in densely
populated circuits. These small,
lightweight probes fit in the hand
much like a pencil and simplify
difficult measurements where the
possibility of shorting adjacent
leads is a problem.
Two HP 10041A, 2 metre, 1 MN/12
pF, 10:1 resistive divider miniature
probes are standard with the 1740
series. Also available are 1 metre
(10026A) and 2 metre (10027A) 50.
1:1 miniature probes which are
used with optimal pulse response
in 500 systems.
Grounding can be an elusive
problem in probing high frequency
signals. The length and inductance
of a six inch grounded lead can
induce ringing and disturb the
pulse response of the probing
system. To eliminate this, HP's
miniature probes have a spring tip
ground lead which equalizes the
length of the ground path and
signal path, maintaining pulse
Figure 12 — HP Miniature probes are
small, lightweight, and easily access
components on crowded, printed
circuit boards. They also provide a
‘variety of probe tips and ground
leads to meet your probing require-
Figure 13 — the 10211A DIP clip accesses pins on DIPs without the worry of shorting
adjacent pins. The 10211A accesses 24-pin DIPs, but two or more can be used to probe
DIPs with greater than 24 pins.
By removing the miniature probe’s
insulating sleeve and using the
10024A or 10211A IC clip, you can
monitor points on DIPs with
improved pulse fidelity and without
the worry of shorting adjacent pins.
The 10024A probes 14 or 16 pin
DIPs while the 10211A probes DIPs
with 24 or more pins. Both the
10024A and 10211A contain a
reference ground plane that
equalizes the length of signal and
ground paths, maintaining pulse
fidelity. Also, the 10028A jumper
cable allows signals to be inserted
in the IC clip from other parts of
the circuit. |
When probing high speed Schottky
TTL or ECL gates, the HP 10020A 500)
resistive divider probe provides
optimal pulse response when used
with the 1740-series 500 inputs.
The 10020A provides division ratios
of up to 100:1 to obtain input
impedances of 5 k with less than
0.7 pF. The 10020A includes the
Spanner ground tip for equal
length ground and signal paths to
maintain pulse fidelity.
The same standards of quality and
reliability are maintained in HP
probes as in HP instruments. This
reliability is backed by a probe
replacement program. If a passive
resistive divider or 50 probe fails
due to materials or workmanship
within the one year warranty
period, it is replaced free of
charge. If a passive resistive divider
or 500 probe fails after the
warranty period, it can be replaced
at approximately half the purchase
price. This program not only backs
up HP quality but also assures you of
the lowest possible cost of
ownership over the long term.
To Hewlett-Packard, providing a quality measurement solution means more than providing reliable, high perfor- € ,
mance instruments. It also means providing the service and technical support required to satisfy your measurement
needs completely. | |
The reputation of the 1740 series
for reliability has been the result of
designed-in reliability and
serviceability as well as an
aggressive manufacturing program
that builds in quality early in the
manufacturing process.
An uncluttered interior is revealed
when the convenient lift-off covers
of the 1740A, 1742A, 1745A, or
1746A are removed. The low
density arrangement of printed
circuit boards and components
facilitates access for calibration and
maintenance. Test and adjustment
points, as well as most transistor
and IC locations, are clearly
labeled to expedite servicing.
Figure 14 — service and calibration
time is reduced with fewadjustments
(approximately 44) and with an
interface board that reduces inter-
connecting cables (1740A shown).
Ea Aa na
Figure 15 — board reliability is emphasized early in the production process with
functional and parametric board tests as well as power cycling. This has resulted in a
board turn-on rate of 99.1% and has increased overall board reliability.
Innovations in circuit design, along
with custom integrated hybrid
circuits minimize the number of
calibration adjustments to be
made. This results in calibration
times that for a trained technician
are typically 30% less than for
competitive units. |
Fans or ventilating holes for
convection cooling are not
required, reducing the internal
accumulation of dust and dirt.
There are no fan filters to clean
and none of the noise associated
with fan cooling. This results in
lower maintenance costs as well as
a more pleasant working
Seminars are an excellent vehicle
to help engineers and technicians
learn more about their Hewlett-
Packard oscilloscope, whether the
information concerns applications,
operation, or maintenance.
Maintenance training classes are
offered several times each year at
the Colorado Springs Division.
These seminars, directed towards
calibration and repair technicians,
teach operation, circuit theory,
calibration, and troubleshooting to
the component level. A nominal
fee is charged to cover study
materials and manuals. Contact
your HP field engineer for
information about a seminar for a
specific instrument.
Operation/application seminars are
also arranged on an individual basis
by field engineers. These seminars
inform engineers and technicians
about special considerations for
such areas as variable persistence
storage, probing, time base errors,
bandwidth, modes of operation,
and specific applications.
e Fr AE Te UY
Channel A: Channel B; ALT (Channels A and 8 displayed on successive sweeps); CHOP (A and B displayed by
switching between channels at a rate of approximately 250 kHz); A+B8 (algebraic addition; X-Y (Avs.B), A- B ¡Channel
B inverted).
Displays internal or external trigger signal. In a one-channel display, Trigger View overrides the selected channel. In
ALT or CHOP, Channels A, B, and the trigger signal are presented in a three-channel display.
VERTICAL AMPLIFIEI Bandwidth and rise time at all deflection factors, from 0° to 55° C, 3 dB
down from a 6 div reference signal.
dc to 100 MHz in both 500 and 1 MN input modes.
Approximately 10 Hz to 100 MHz.
Limits upper bandwidth to approximately 20 MHz.
<3.5 ns, measured from 10% to 90% <3.5 ns, measured from 10% to 90% points of a 5 div input step.
points of a 6 div input step.
5 mV/div to 20 V/div (12 calibrated positions) in 1, 2, 5 sequence. Accurate to within 3%.
Continuously variable between all ranges, extends maximum deflection factor to at least 50 V/div. UNCAL light
Internal trigger signal amplitude approximates vertical signal amplitude. External trigger signal deflection factor is
Trigger View approximately 100 mV/div or 1 V/div for EXT + 10. Trigger point is approximately center screen.
POLARITY Channel B may be inverted with front panel pushbutton.
DELAY LINE Input signals are delayed sufficiently to view leading edge of input pulse without advanced trigger.
DELAY LINE - With identically timed signals to a vertical input and the external trigger input, trigger view signal delay is <3.5 ns.
Trigger View Signal Delay
1 MQ +2% shunted by approximately 20 pF; maximum input +250 V (de + pk ac) or 500 V p-p at 1 kHz or less.
500 +3%. Maximum input 5 V rms.
Ground position disconnects input connector and grounds amplifier input.
A + B OPERATION - Amplifier
Common Mode
Bandwidth and deflection factors are unchanged; Channel B may be inverted for A - B operation.
CMR is at least 20 dB from dc to 20 MHz. Common mode signal amplitude equivalent to 8 div with one vernier adjusted
for optimum rejection.
-: (X5) - Bandwidth"
3 dB down from 6 div reference.
dc to approximately 40 MHz.
Approximately 10 Hz to 40 MHz.
<9 ns - measured from 10% to 90% <9 ns - measured from 10% to 90% points of a 5 div input step.
points on a 6 div input step.
Increases sensitivity of the 5 mV and 10 mV/div deflection factor settings by a factor of 5 with a maximum sensitivity of
1 mV/div on Channels A and B.
Channel A, Channel B, Composite or Line. All display modes triggered by displayed signal except in CHOP and Line.
“Source (25) In CHOP mode, trigger signal is derived from Channel À. In Line, trigger signal derived from power line frequency.
MAIN SWEEP MODES - Sweep is triggered by internal or external signal.
MAIN SWEEP MODES - Baseline displayed in absence of input signal. With input signals above approximately 40 Hz, triggering is same as
Automatic normal. Note: for stable triggering on signals with repetition rates less than 40 Hz, use Normal! mode.
MAIN SWEEP MODES - Selects Normal triggering and permits only one sweep. RESET rearms sweep and lights indicator.
Single ; .
Delayed Sweep automatically starts at the end of delay time.
Delayed Sweep is armed and triggerable at the end of delay time.
dc to 25 MHz on signals causing >0.3 div vertical deflection, increasing to =1 div at 100 MHz - in CHOP, 2 divto 100 MHz
and 5 div with X5 vertical engaged. Line triggering available.
dc to 50 MHz on signals of 50 mV p-p or more, increasing to 100 mV p-p at 100 MHz. Required signal level increased by
2 in CHOP mode. |
Approximately 1 MN shunted by 20 pF. Maximum input 250 V (dc + pk ac) or 500 V p-p at 1 kHz or less.
At any point on the displayed vertical waveform.
TRIGGER LEVEL and SLOPE - | Continuously variable from +1 V to -1 V on either slope of the trigger signal; +10 V to —10 V in divide by 10 mode (+10).
External |
TRIGGER COUPLING - AC Attenuates signals below approximately 20 Hz.
TRIGGER COUPLING - | Attenuates signals below approximately 4 kHz.
LF Reject
TRIGGER COUPLING - Attenuates signals above approximately 4 kHz.
HF Reject
TRIGGER HOLDOFF Increases sweep holdoff time in all ranges.
(Main Sweep)
Main, Delayed, Mixed, Mag X10, A vs. B, Main Intensified; Main Intensified Main, Delayed, Mag X10, A vs. B,
is activated by rotating delayed time base control from the off position. Main Intensified, Delta Time; Channel
A or B may be selected for the start
event in Delta Time mode.
Display Modes
MAIN SWEEP - Ranges 50 ns to 2 s/div (24 ranges) ina 1, 2, 5 sequence.
DELAYED SWEEP - Ranges 50 ns to 20 ms/div (18 ranges) in a 1, 2, 5 sequence.
ACCURACY - — — —
Main and Delayed = due 32 e, I “10°C to +15°C
“50 ns to 20 ms/div A E ; : +3%
X10 | as
*Add 1% for the 50 ms to 2 s range
MAIN SWEEP VERNIER Continuously variable between all ranges; extends slowest sweep to at least 5 s/div. UNCAL light indicator.
MAGNIFIER (X10) Expands all sweeps by a factor of 10; extends fastest sweep range to 5 ns/div.
CALIBRATED SWEEP DELAY 0.5 to 10X Main Time/div settings of 100 ns to 2 s (minimum, delay 150 ns).
Range / |
MEASUREMENT ACCURACY - °° Main Ti Setting “| couracy (H15°C to +35°C) 55 5
Melidial Readout
1% + 0 1% of full-scale) .
*Add 1% from 0°C to +15°C and from +35°C to +55°C
DELAY JITTER | <0.002% (1 part in 50,000) of maximum delay in each step from +15° C to +35° C; <0.005% (1 part in 20,000) from 0°C to
+15°C and from +35°C to +55°C.
MAIN INTENSIFIED - - Intensifies the portion of main time base to be expanded to full screen in Delayed Time Base mode. STOP control adjusts
Delayed Sweep : position of intensified marker in the 1742A/1746A.
A TIME MODE (See pg. 11 for time interval
MIXED TIME BASE Dual time base in which the main time base displays the first portion of
sweep and the delayed time base completes the sweep at a faster rate. Also
operates in Single Sweep mode. Accuracy, add 2% to main time base setting.
A vs. B OPERATION - Channel A (Y-axis), de to 100 MHz; Channel B (X-axis), dc to 5 MHz.
PHASE DIFFERENCE | <3° dc to 100 kHz.
CATHODE RAY TUBE AND Hewlett-Packard, 12.8 cm (5 in.) | Hewlett-Packard, 15.3 cm (6 in.) rectangular CRT, post accelerator, approximately
-Type rectangular CRT, post accelerator, | 21 kV accelerating potential, aluminized P31 phosphor. The 1742A has same CRT
approximately 15 kV accelerating | as the 1740A.
potential, aluminized P31 phosphor.
GRATICULE 8 x 10 div; 1 div=1 cm; internal non- | 10 x 10 div; 1 vertical div = 0.95 cm, 1 horizontal div = 1.2 cm; internal nonparallax
parallax graticule with 0.2 subdivision | graticuie with 0.2 subdivision markings on major horizontal and vertical axes,
markings on major horizontal and | markings for rise time measurements. Internal flood gun graticule illumination. The
vertical axes, markings for rise time | 1742A has same graticule as the 1740A.
measurements. Internal flood gun
graticule illumination.
BEAM FINDER Returns trace to CRT regardless of horizontal, vertical, or intensity settings.
Z-AXIS INPUT +4.V, >50 ns width pulse blanks trace of any intensity, ‘usable to <10 MHz for normal intensity. input R, 1 ко: +10%.
(Intensity Modulation) | Maximum input +20 V (dc + peak ac); <! kHz. a e | : ;
REAR PANEL CONTROLS Astigmatism and trace align.
Main and delayed gates; 0.8 V to >2.5 V capable of supplying approximately 5 mA.
1 V p-p into >1 MM; 0.1 V into 501; accuracy +1%; rise time <0.1 us; frequency approximately 1.4 kHz.
100, 120, 220, 250 Vac, +10%:; 48 to 440 Hz; 100 VA max.
Net 13 kg (28.6 Ib »; shipping 15.7 kg (34.6 1b 1.
Temperature, 0° C to 55° C; humidity, to 95% relative humidity at +40° C; altitude, to 4600 m (15 000 ft.; vibration, vibrated
in three planes for 15 min. each with 254 mm 10.01 in.) excursion, 10 to 55 Hz.
One blue light filter (HP P/N 01740-02701, 1740A); one green contrast filter/CRT shield (HP P/N 1000-0649, 1745/46A);
one 2.3 m (7.5 ft.) power cord; one vinyl accessory storage pouch; one Operator's Guide and one Service Manual; two
Model 10041A 10:1 divider probes approximately 2 m (6.6 ft.) long; with TV sync Option 005, two IRE graticule overlays
0 to 100 IRE units (HP P/N 01740-02801) and -40 to 100 IRE units (HP P/N 01740-02802).
PRICES $2540 | $2840 $2775/$3140
OPTIONS = =: | 001: fixed line power cord ............e.ece0rrreereerreree er ee + $15
005: TV sync (1740/42) ...... + $215. | LL Lana an aa a aa a ae eee eee ee ea eee + $330
034: built-in DMM (60 Hz operationi ................<.<00m eee eee eee sata eee see eee eee tee tete EE + $430
035: built-in DMM (50 Hz operations ...........4.. 0400 eee ee eee ee eee eee eee eee te + $430
090: without probes ...............<404 ca ee eee eee sata eee NT — $150.
096: two 1.8 m (6 ft) 10006D 10:1 probes substituted for two miniature probes ........ iii iii AH NC
534: combines option 005 and 034 .........e_ee.rrrenreoreeroreea + $730
535: combines option 005 and 035 ..........e.esreresercverrerner + $730
A TIME MODE: intensifies two parts of main time
base to be expanded to fuil screen in Delayed
Time Base Mode.
FUNCTION: measures time interval between
two events on Channel A (Channel À display),
two events on Channel B (Channel 8 display),
or between two events starting on Channel A
or B and stopping on Channei Aor B (alternate
ACCURACY - Opt. 034/035 or External DVM:
(plus accuracy of external DVM.)
Main Time |.
- Base US
*On 100 ns/div range, specification applies after
first cm of sweep. On all other ranges, spec-
ification applies after first 8 mm of sweep.
**Add 1% for temperatures from 0° G to +15°C
and from +35°C to +55°C.
“from 50 V to 100 mV full scale. Full-scale output
voltage equals (Time/div X10 V) (e.g., 0.05us
or 0.05 ms give 0.5 V out).
STABILITY - 0°C to 55°C: short term, 0.005%;
temperature +0.03%/°C deviation from cali-
bration temperature range.
‘OPTION 034/035 DMM SPECIFICATIONS (1740A,1742A,1745A,1746A)
Impedance: 1-1.5() constant.
Current Protected: 1.5 A fuse.
Temperature Coefficient: +:0.05% of reading
+0.2 digit!/° C.
Ranges: 0.110 A, 1.10 À.
Accuracy: (+20° С 10 +30° С).
FRanges 45 Hz to 2 kHz] 2 kHz to 5 kHz |]
11А +(2% of reading | *(3.5% of readin
Ranges: 0.110 V, 1.10 М, 11.0 М, 110 V, 1100 V
(1000 V max).
Accuracy: (+20° C to +30° C).
EA ange : vs зи
—... +4digits) .—. | +6 digits) 0
0.11 A +(25% of reading] +(5.5% of readin
*Ranges usable from 0.03 of range to full range.
Impedance: 1-1.5 (2 constant.
Current Protected: 1.5 A fuse.
Temperature Coefficient: +(0.05% of reading
+0.5 digit” C.
Common Mode Rejection: (1 k(1 unbalance!
>100 dB at 50 Hz or 60 Hz selected internally.
Input Resistance: 10 МО +5%.
Input Protection: 1100 V peak.
Temperature Coefficient: +(0.05% of reading
+0.2 digiti/° C. OHMMETER
AC VOLTMETER Ranges: 1.10 КО, 11.0 КО, +10 КО, 1100 КО
Ranges: 0.110 V, 1.10 М, 11.0 М, 110 У, 1100 V 11 000 kn.
(700 V rms max).
Accuracy: (+20° C to +30° C1.
Note - ac converter is average responding and
Accuracy: (+20° C to +30° C:.
calibrated in rms. Ranges o 1 © Accuracy oo N |
— 110 kf, 1100 kN |. +(0.3% of reading +
| ena) 45 Hz to | 2 kHz el 5 kHz to | СФ) -
| kHz | 5kHz | 10kHz ae |
— > H: - 19 ки 1.000 ко, | 05% of reading + |
1.1 V to | £(1.5% of | £(3% of p+(8% of 11k T1kA | tdigit. RE
1100 V } reading +| read
wT 4 digits) | 6 Open Circuit Voltage: <4 V.
Input Voitage Protection: <30 V rms continuous
fuse protected from 30 V.
Temperature Coefficient: +:0.05% of reading
+0.2 digiti/° C.
Ranging: Automatic Range Hold.
Common to Ground: <500 V peak.
Sample Rate: =3/second.
Overload Indication: horizontal bars.
Accessories Supplied: one operating and service
manual and one kit HP P/N 8120-2521: with
two test leads.
Dimensions: See outline drawing page 12.
*Ranges usable from 0.03 of range to full range.
Common Mode Rejection: (1 k(} unbalance)
>80 dB at 50 Hz or 60 Hz selected internally.
Input Resistance: 10 MO +5%.
Input Capacitance: <30 pF.
Input Protection: <1100 V peak.
Temperature Coefficient: +(0.05% of reading
+0.5 digit :/* C.
Ranges: +0.110 A, 1.10 A.
Accuracy: (+20° C to +30° C) (0.8% of reading
+2 digits».
The Multimeter kit adapts standard Models
1740A, 1742A, 1745A and 1746A to Option
034/035 configuration. On Model 1746A,
the kit also provides direct time interval
readout. The kit includes a multimeter with
two probes and operating manual, an
oscilloscope top cover, a vinyl storage
pouch, and mounting hardware. Order HP
P/N 01740-69503 for 1740A and 1745A or
P/N 01742-69501 for 1742A and 1746A . $450
Any 1700 series oscilloscope can easily
display composite video waveforms with the
addition of the 10029A retrofit kit module.
No internal modifications are required to
the oscilloscope except for a minor power
requirement ...........e—reeececono $355
Models 1006A and 1007A Testmobiles offer
efficient mobility for the Models 1740A,
1742A, 1745A or 1746A oscilloscopes. A
power strip can be added to either
testmobile, and Model 1007A can be
modified for various applications with
optional drawers and trays. Call your HP
Field Engineer for the available configurations.
Model 197B Camera fits directly on the
1740A and 197B Option 009 fits directly on
the 1745A and 1746A. An ultraviolet light is
included for graticule illumination.
Model 1978 Camera (1740A) ........ $1495
Model 1978 Opt 009 (1745A, 1746A) .... NC
Model 197B Opt 001, without UV
light... ee eee ee — $50
Camera Adapter: Model 10377A Camera
Adapter fits Tektronix Inc C30 and C31
Cameras to the 1740A. Model 10379A fits
HP Model 197B camera to the 1745A,
Three part video tapes series covering basic
oscilloscope theory, front panel controls,
and their use in various measurement
applications. These tapes are titled “How to
use an Oscilloscope” Part | (HP P/N 90742),
Part I1 (HP P/N 90743), Part 111 (HP P/N
90744). Call your HP Field Engineer for
ordering information.
Model 10491B rack mount adapter, 222 mm
(8-3/4 in.) high, 540 mm (21-1/4 in.) wide,
and 540 (21-1/4 in.) deep, adapts the 1740A,
1742A, 1745A or 1746A to a standard 483
mm (19 in.) rack (not compatible with
Options 034/035) ................... $230
Model 1112A Inverter Power Supply is
directly compatible with the 1740A, 1742A,
1745A, 1746A oscilloscopes and provides power
from an internal battery or an external 11.5 V
to 50 V de source. For a convenient system, the 1112A is mounted on the oscilloscope with
an easy-to-use mounting strap.
Model 1112A Inverter Power Supply (400 HZ) ...............eeecesersroeciororne.. $1525
Model 1112A Option 060 Inverter (60 Hz) .............e-e.erevereooercarerecenene. $200
IC Test Clips: simplify probing dual in-line packages, reduce probe loading and shorting
between IC pins.
16-Pin Dips 10024A ..........e.e.ererecsrcororeocerererererrrearerearererereeme.. $20
24-Pin Dips 10211A ........._..eveerccricarecareerrecirrererir ene nere cone. $76
Jumper Cable Model 10028A: model 10028A 50 ohm, 610 mm (24 in.) miniature
probe/jumper cable, with a probe tip on each end, allows bypassing circuits or injecting
signals in densely populated IC circuits.............-..ewressrseccrrecerie cer een. . $56
BNC Adapter Tip (HP P/N 1250-1454): the BNC Adapter Tip permits signal monitoring at
BNC connectors with miniature probes .............. Ce eee eae $21
Approx Max
Model Lengthin Division Input Shunt Peak Compensates
No. Metres (ft) Ratio R Capacitance Voltage Scope Input C Prices
10040A 1 (3.3) 10:1 1MN 9 pF 300 20-30 pF $97
10041A 2 (6.6) 10:1 1MN 12 pF 300 20-26 pF $97
10042A 3 (9.8) 10:1 1MO 12 pF 300 20-24 pF $97
10021A 1 (3.3) 1:1 36 pF 300 $61
10022A 2 (6.6) 1:1 62 pF 300 $61
10026A 1 (3.3) 1:1 50 N 100 (2A) $61
10027 А 2 (6.6) 1:1 50 N 100 (2A) $61
When combined with the Optional DMM (034/035), the Model 10023A Temperature Probe offers
fast, accurate, direct readout of temperatures in degrees Celsius ......................... $163
1. Dimensions are for general information
only. H dimensions are required for
building special enclosures, contact your
HP Field Engineer. ~~ 7)ео I
2. Dimensions are in millimetres and |
(inches). > a. o ACE Piso
3. Optional DMM. +
For more information. cali your local HP Sales Office or nearest Regional Office: Eastern (301) 268-2000, Midwestern (312) 255-9800: Southern (404) 955-1500: Western (213)877-1282: Canadian
(416) 678-9430 Ask the operator for Instrument Sales. Or. Write: Hewlett-Packard. 1501 Page Mill Road. Palo Alto, CA 94304. In Europe: Hewlett-Packard S.A., 7. rue du Bors-du-Lan, Р.О. Вох
CH-1217 Meynn 2. Geneva, Switzerland in Japan: Yokogawa-Hewlett-Packard Ltd.. 29-21. Takaido-Higashi 3-chome. Suginami-ku, Tokyo. 168.
Prices apply only to domestic U.S. customers.
Prices and Data subject to change. PRINTED IN U.S.A.
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