HP 8903B Audio Analyzer
HP 8903E Distortion Analyzer
20 Hz to 100 kHz
Technical Specifications
The Versatile Choice for
Audio Analysis
Features / Measurements
Audio Source
50/600 W Output Impedance
Fully Programmable
Balanced Input
Frequency Counter
Distortion
SINAD
AC Volts
DC Volts
RMS/Average/Quasi-Peak
Detection
Plug-in Filters
Distortion Level
Signal-To-Noise
Sweep
HP 8903B
HP 8903E
HP 8903B Audio Analyzer
Special function 47 switches source
OUTPUT IMPEDANCE- (50 or 600 ohms) to
provide higher output into lower impedance
loads (+17 dBm into 600 ohms in 50 ohm
position).
Audio source output level from
0.6 mV to 6 V open circuit,
20 Hz to 100 kHz.
Log SWEEP allows measurement of
frequency response and swept
distortion automatically.
LOG/LIN key allows results to be
displayed in linear or log units.
Log mode displays readings in
dBm into 600 ohms when
measuring AC level.
Special functions
control detector
response: rms,
average (rms
calibrated), and
quasi-peak responses
are available.
Plug-in filters add
measurement flexibility
to the HP 8903B and
HP 8903E. Both
instruments have two
slots which can be filled
with any combination of
six optional filters.
RATIO key permits display in dB
or percent relative to an entered
or measured value.
Analog meter for
SINAD mode provides
easier reading when
measuring noisy.
signals.
Balanced (full-differential) input
allows testing of bridged
amplifiers and other devices
with floating outputs. Maximum
input voltage is a full 300 volts,
differential or applied to either
the high or low input
Low-noise input
amplifier provides
superior analyzer
performance.
HP 8903E Distortion Analyzer
Front panel MONITOR output
provides a scaled output of
the input signal. In SINAD and
distortion modes, the
fundamental is removed.
NOTCH TUNE key allows
the user to lock the notch
filter at any measured
input frequency. This is
useful when measuring
very noisy signals in
distortion and SINAD
modes.
LOG/LIN key allows results to be
displayed in linear or log units. Log mode
displays readings in dBm into 600 ohms
when measuring ac level.
Plug-in filters add
measurement flexibility to
the HP 8903B and
HP 8903E. Both
instruments have two slots
which can be filled with any
combination of six optional
filters.
RATIO key permits display in dB
or percent relative to an entered
or measured value.
Front panel key allows selection of
rms or average (rms calibrated)
detector response. Quasi-peak
detector response available via HP-IB
programming.
HP-IB Not just IEEE-488, but the hardware, documentation and
support that delivers the shortest path to a measurement s ystem.
Low-noise input amplifier
provides superior analyzer
performance.
Balanced (full-differential) input has a
maximum input voltage of 300 volts
differentially or applied from the high
input to ground, and 30 volts applied from
the low input to ground.
2
Transceiver Tests
Both the HP 8903B and HP 8903E have been optimized for receiver testing. For SINAD measurements, extra
filtering and smoothing circuits yield more accurate and repeatable results. With its built-in source, the HP 8903B
makes signal-to-noise measurements on AM receivers using similar smoothing techniques. Transmitter testing is
also easy. In conjunction with the HP 8901A , HP 8901B , or HP 8902A modulation analyzers you can measure
transmitter distortion, frequency response, and count squelch tones. The HP 8903B also provides the audio tones
to modulate the transmitter.
Audio Applications
The HP 8903B Audio Analyzer and HP 8903E Distortion Analyzer make your audio measurements fast and easy.
The analyzers automatically tune and autorange for maximum accuracy and resolution. Distortion, frequency
response, ac and dc voltage measurements are only a single keystroke away. With a built-in low distortion audio
source, the HP 8903B is ideally suited to stimulus-response applications. Microprocessor control of source and
analyzer allows the HP 8903B to perform swept measurements. For applications where a separate source is
used, the HP 8903E is an ideal lower-cost solution.
ATE Systems
HP-IB control of all measurement functions makes analyzers valuable tools for ATE applications. These analyzers
combine the power of a digital voltmeter, frequency counter, and distortion analyzer into one instrument. Since
these functions are all available at one input connector, interfacing requirements, hardware costs, and
software development time are reduced. The HP 8903B also includes a low-distortion programmable audio source.
3
Versatile
The HP 8903B Audio Analyzer and HP 8903D Distortion Analyzer provide unparalleled versatility and performance
for audio measurements from 20 Hz to 100 kHz. Both instruments combine the functionality of a
high-performance distortion analyzer, frequency counter, ac voltmeter, dc voltmeter, and SINAD meter into one
compact package. In addition, the HP 8903B has a low-distortion audio source which allows it to perform
stimulus-response measurements, such as signal-to-noise ratio, automatically with no additional equipment.
Simple
For ease of use, most measurements are made with one or two keystrokes. Both analyzers automatically tune and
autorange for maximum accuracy and resolution. For quick identification of input signals, the analyzers count and
display the input frequency in all ac measurement modes. The HP 8903B can also measure distortion of one signal
while generating another frequency, because analyzer tuning and source frequency are independent.
Accurate
For accurate measurement of complex waveforms and noise, the analyzers use true-rms detection. Average (rms
calibrated) and quasi-peak detection are also available via front panel control, Accurate distortion measurements
can typically be made down to less than –90 dB (0.003%) between 20 Hz and 20 kHz. Over the same frequency
range, flatness measurements are possible to 0.05 dB (0.5%). The analyzers, precision reciprocal counters give
you fast, accurate characterizations of audio frequencies. For example, when counting a 1 kHz signal, the analyzers will be accurate within ±.14 Hz.
Audio Application
The analyzers have many features which make difficult
audio measurements easy. These include flexible data
display formats, balanced analyzer input, plug-in filters,
fully-automatic notch filter tuning, and for the
HP 8903B, convenient audio source control and swept
measurements. Complete control over display formatting gives you a choice between volts, millivolts, dBm
into 600 ohms, and watts for ac level measurements or
percent and dB for distortion measurements. Using the
ratio key, you can establish a reference in percent or dB
and directly make frequency response and 3 dB bandwidth measurements without computation.
Balanced Analyzer lnput
In the quest for higher output power, many audio amplifiers use bridged output stages. Such amplifiers can be
difficult to characterize because their outputs cannot
be grounded. To test these devices, the usual approach
has to been to use a balanced, calibrated isolation
transformer connected to an analyzer with an unbalanced input. Balanced inputs on the HP 8903B and HP
8903E make transformers unnecessary. Simply float the
analyzer input and connect the bridged device directly
and you are ready to make measurements.
Balanced analyzer inputs make testing bridged amplifiers
easy and fast
4
Audio Applications
Choose the Filters for Your Applications
Internal plug-in filters simplify your audio measurements by providing weighting networks required by international standards. Among the filters available are
the CCIR weighting filter, CCIR/ARM weighting filter,
and the ANSI “A” weighting filter. In addition to these
filters, both analyzers come with selectable 30 kHz and
80 kHz low-pass filters to reject unwanted out-of-band
signals and noise.
Filters Standard Optional*
80 kHz low-pass
30 kHz low-pass
400 Hz high-pass
CCITT weighting
CCIR weighting
C-Message weighting
CCIR/ARM weighting
“A” weighting
*These are plug-in filters: any two can be installed in either analyzer.
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High-Performance Distortion Capability
Distortion measurements are fast and accurate. With a
single keystroke, the analyzers count the input signal,
autorange for maximum performance, and display the
result. Typical time to return the first distortion measurement is 1.5 seconds with a measurement rate of
two readings per second thereafter. Residual distortion
and noise for the analyzer sections is specified to be
less than –80 dB from 20 Hz to 20 kHz in an 80 kHz
measurement bandwidth.
Simplicity in Stimulus-Response Testing
With its internal audio source and microprocessor, the
HP 8903B performs swept frequency response, swept
distortion, and signal-to-noise measurements automatically.
X-Y Recorder setup diagram.
Automatic Signal-To-Noise Measurements
For signal-to-noise measurements, the HP 8903B monitors the ac input level while turning the source on and
off and displaying the ratio. With optional plug-in filters, you can perform weighted signal-to-noise measurements easily, accurately, and in real time.
Making swept measurements with the HP 8903B is very
easy. For example, to check the frequency response of
an active filter, only a few steps are required. After connecting the device and setting the required source level,
you need only to enter the sweep start and stop frequencies, and then press the sweep key. You can have a
hard-copy plot of your results using an analog X-Y
recorder with a few extra keystrokes.
5
Transmitter and Receiver Tests
The analyzers have several measurements and features
which have been designed specifically for transceiver
tests. These include SINAD measurements, optional
plug-in weighting filters for testing to CEPT, EIA, CCIR,
and Bell standards, rms detection for accurate noise
readings, a reciprocal counter for measuring squelch
tones and, with the HP 8903B, signal-to-noise ratio measurements.
SINAD... Designed for the Real World
SINAD measurements, which are one of the most common FM receiver tests, must be made repeatedly when
checking receiver sensitivity or adjacent-channel selectivity. In order to smooth out the noisy signals found in
receiver testing, the analyzers’ SINAD mode employs
extra filtering circuits. These circuits have been optimized for high speed (more than two readings per second) and excellent repeatability. The HP 8903B overcomes the tendency of many automatic analyzers to become unlocked in SINAD mode by tuning its notch filter
to the source frequency. Since it has no internal audio
source, the HP 8903E tunes its notch filter to the input
frequency. To make sure that the HP 8903E does not become unlocked when measuring noisy signals, a frontpanel notch-hold key allows you to lock the filter to a
given input frequency.
Optimized SINAD Display
To reduce digit flicker, the analyzers round off the display to the nearest 0.5 dB for SINAD ratios less than
25 dB. As an extra aid in reading noisy signals, the
HP 8903B adds an analog SINAD meter which displays
ratios less than 24 dB.
The HP 8903B’s analog SINAD meter helps smooth out noisy
signals found in receiver testing.
The HP 8903B is an integral part of HP’s total solution for
transceiver testing.
Filters for Transmitter and Receiver
Applications
With two internal filter positions and six optional plugin filters to choose from, you can tailor the analyzers to
fit your applications. The CCITT, CCIR, and C-MESSAGE weighting filters meet international standards for
receiver testing. For transmitter testing, a seven-pole
400 Hz high-pass filter is available to reject subaudible
squelch signals. Providing greater than 40 dB rejection
of signals up to 250 Hz, the analyzers’ 400 Hz high-pass
filter allows you to measure transmitter audio distortion to 1 percent without disabling squelch signals.
6
ATE Systems
Accurate Signal Detection
In order to accurately characterize signals with high
noise content, as found in receiver SINAD measurements, true-rms detection is required. The analyzers
employ true-rms detection for all signals with crest factor less than three. In addition, average detection (rms
calibrated) and quasi-peak detection (CCIR 468-4) are
also available via front panel control.
You can choose between rms, average, or quasi-peak detection. (Shown above: HP 8903E front panel)
Generate and Count Tone Bursts
Simple but powerful programming, combined with
HP-IB control of all major functions, make the analyzers valuable tools for the automatic test equipment environment. All analyzer functions are available at one
input connector, reducing hardware and software development time and costs. Many ATE systems require
automated measurements to determine the quality of
audio signals. The analyzers provide distortion and
SINAD measurements with an acquisition time of less
than 1.5s and a measurement rate of greater than two
readings per second after locking. Another application
often found in ATE systems involves measuring lowlevel ac signals. With a full-range ac-level display of
.3000 mV and an accuracy of 2 percent of reading (Vin >
50 mV, 20 Hz to 20 kHz), the analyzers accurately characterize these small ac signals.
Under HP-IB control, the analyzers use their reciprocal
counters to count tone-burst sequences. Maximum
count rate for the Rapid Frequency Count mode is six
milliseconds per reading. With the HP 8903B, you can
generate tone burst sequences. Minimum tone duration
is three milliseconds, which is fast enough for such applications as unsquelching pagers.
Signal-to-Noise Ratio for Receivers
Just as SINAD measurements are most often performed on FM receivers, signal-to-noise ratio measurements are usually employed as a measure of signal
quality on AM receivers. The HP 8903B automatically
makes signal-to-noise ratio measurements by monitoring the ac level while turning its source on and off. Like
SINAD, signal-to-noise mode in the HP 8903B uses display rounding and filtering to reduce the effects of
noise on the measurement.
The HP 8903E provides high performance distortion analysis
for ATE applications where an external audio source is used.
Flexible ATE Source
The HP 8903B has enhanced ATE capabilities with its
internal low-distortion source. Rapid-source programming mode enables the internal oscillator to be directly
programmed through HP-IB with five bytes. Additionally, the source has switchable output impedance
(50 or 600 ohms). With a choice of source output
impedance, you can match the HP 8903B to the instruments in your ATE system. In the 50-ohm position, the
HP 8903B delivers +17 dBm into a 600-ohm load.
7
HP 8903B Specifications
SPECIFICATIONS describe the instrument’s warranted
performance.
Supplemental Characteristics (shown in italics) are
intended to provide information useful in applying the
instrument by giving typical, but non-warranted
performance parameters.
System Specification
(HP 8903B only, source and analyzer combined.)
Distortion
RESIDUAL DISTORTION AND NOISE (the higher of):
80 kHz BW: –80 dB or 17 µV, 20 Hz to 20 kHz.
500 kHz BW: –70 dB or 50 µV, 20 Hz to 50 kHz.
–65 dB or 50 µV, 50 kHz to 100 kHz.
Supplementaltal Characteristics
Signal-To-Noise
FREQUENCY RANGE: 50 Hz to 100 kHz.
DISPLAY RANGE: 0 to 99.99 dB.
ACCURACY: ±1 dB.
INPUT VOLTAGE RANGE: 50 mV to 300 V.
RESIDUAL NOISE (the higher of):
80 kHz BW; – 85 dB or 17 µV.
500 kHz BW: – 70 dB or 50 µV.
Supplemental Characteristics
TIME TO RETURN FIRST MEASUREMENT: < 2.5s.
MEASUREMENT BATE: 1 reading per second.
RESOLUTION: same as Listed under SIXAD,
on next page.
Source Specifications
(HP 8903B only)
Frequency
RANGE: 20 Hz to 100 kHz.
RESOLUTION: 0.3%
ACCURACY: 0.3% of setting.
Typical residual distortion and noise of the source and
analyzer combined (source voltage set to 1.5V, 80 kHz BW).
Dashed line represents typical residual distortion and
noise for the analyzer only.
Flatness
Supplemental Characteristics
Typical flatness of source and analyzer combined (source
voltage set to 1V, 1 kHz reference).
Output Level
RANGE: 0.6 mV to 6 V open circuit.
RESOLUTION: 0.3% or better.
ACCURACY (open circuit):
2% of setting 60 mV to 6 V, 20 Hz
to 50 kHz.
3% of setting 6 mV to 6 V, 20 Hz
to 100 kHz.
5% of setting 0.6 mV to 6 mV, 20 Hz
to 100 kHz.
FLATNESS (1 kHz reference);
±0.7% (±0.06 dB), 20 Hz to 20 kHz.
±2.5% (±0.22 dB), 20 Hz to 100 kHz.
DISTORTION AND NOISE (the higher of):
80 kHz BW: –80 dB or 15 µV, 20 Hz
to 20 kHz.
500 kHz BW: –70 dB or 38 pV, 20 Hz
to 50 kHz.
- –65 dB or 38 µV, 50 kHz to 100 kHz.
IMPEDANCE: 600 Ω ±1% or 50 Ω ±2% front panel or
HP-IB programmable (47 special
function).
Supplemental Characteristics
Frequency Switching SPEED: < 3 ms.
(Does not include HP-IB programming time.)
OUTPUT LEVEL Switching SPEED: 20 ms.
(Does not include HP-IB programming time.)
SWEEP MODE: log sweep with up to 500 points per
decade or 255 points total between
` entered start and stop frequencies.
8
HP 8903B and HP 8903E Analyzer Specifications
Distortion
FUNDAMENTAL FREQUENCY RANGE:
20 Hz to 100 kHz.
DISPLAY RANGE: 0.001% to 100% (–99.99 to 0 dB).
ACCURACY: ±1 dB, 20 Hz to 20 kHz.
±2 dB, 20 kHz to 100 kHz.
INPUT VOLTAGE RANGE:
50 mV to 300 V.
RESIDUAL DISTORTION AND NOISE (the higher of):
80 kHz BW: – 80 dB or 15 µV, 20 Hz to 20 kHz.
500 kHz BW: – 70 dB or 45 µV, 20 Hz to 50 kHz.
– 65 dB or 45 µV, 50 kHz to 100 kHz.
Supplemental Characteristics
3 dB Measurement BANDWIDTH: 10 Hz
to 500 kHz.
DETECTION: true rms or rms-calibrated average.
DISPLAYED RESOLUTION:
0.0001% (< 0.1% distortion).
0.001% (0.1% to 3% distortion).
0.01% (3% to 30% distortion).
0.1% (> 30% distortion).
TIME TO RETURN FIRST MEASUREMENT: 1.5s.
MEASUREMENT RATE: 2 readings per second.
SINAD
FUNDAMENTAL FREQUENCY RANGE:
20 Hz to 100 kHz.
DISPLAY RANGE: 0 to 99.99 dB.
RESIDUAL DISTORTION AND NOISE: same as listed
under distortion.
ACCURACY: ±1 dB, 20 Hz to 20 kHz.
±2 dB, 20 kHz to 100 kHz.
INPUT VOLTAGE RANGE: 50 mV to 300 V.
Supplemental Characteristics
DETECTION: true-rms or rms-calibrated average.
RESOLUTION:
HP 8903B 0.01 dB for SINAD ratios >25 dB. For
ratios <25 dB the display is rounded
to the nearest 0.5 dB to reduce digit
Flick- ering of noisy signals (full
resolution is available via special
function 16.1).
HP 8903E powers up with special function 16.1
active for 0.01 dB resolution at all
SINAD ratios,
ANALOG METER (HP 8903B only)
Active in SINAD mode only and for
SINAD ratios up to 18 dB (24 dB
using special function 7.1). 1.0 dB
typical accuracy.
TUNING:
HP 8903B notch filter is tuned to the internal
audio source frequency.
HP 8903E notch filter is tuned to the counted
input frequency.
TIME TO RETURN FIRST MEASUREMENT: 1.5s.
MEASUREMENTS RATE: 2 readings per second.
AC Level
FULL RANGE DISPLAY: 300.0 V, 30.00 V, 3.000 V,
OVER RANGE: 33% except on 300 V range.
ACCURACY (rms and average detection):
.3000 V, 30.00 mV, 3.000 mV, 0.3000 mV.
±2%, 50 mV to 300 V, 20 Hz to 20 kHz.
±4%, 0.3 mV to 50 mV, 20 Hz to 100 kHz.
±4%, 50 mV to 300 V, 20 kHz to100 kHz.
Supplemental Characteristics
AC CONVERTER: true-rms responding for signals with
crest factor up to 3, rms calibrated average detection,
or quasi-peak detention.
TIME TO RETURN FIRST MEASUREMENT: < 1.5s.
MEASUREMENT RATE: > 2.5 readings per second.
3 dB MEASUREMENT BANDWIDTH: > 500 kHz.
QUASI-PEAK DETECTOR CHARACTERISTIC:
QUASI-PEAK DETECTOR ACCURACY:
Meets CCIR 468-4.
(20 Hz to 20 kHz) ±6% typically.
DCL level
FULL RANGE DISPLAY:
OVER RANGE: 33%, except on 300 V range.
ACCURACY:
300.0 V, 48.00 V, 16.00 V, 4.000 V.
±1.0% of reading (600 mV to 300 V).
±6 mV (V
< 600 mV).
in
Supplemental Characteristics
TIME TO RETURN FIRST MEASUREMENT: <1.5s.
MEASUREMENT RATE: 3 readings per second
Frequency Measurement
MEASUREMENT RANGE:
RESOLUTION:
ACCURACY: ±(0.004% +1 digit).
SENSITIVITY:
20 Hz to 150 kHz. (20 Hz to 100 kHz in
distortion and SINAD modes.)
5 digits (0.01 Hz for input frequencies
< 100 Hz).
50 mV in distortion and SINAD modes.
5 mV in ac-level and signal-to-noise
(HP 8903B only) modes.
Supplemental Characteristics
MEASUREMENT RATE: same as measurement mode
COUNTING TECHNIQUE:
selected.
reciprocal with 2 MHz timebase.
9
HP 8903B and HP 8903E Analyzer Specifications
Standard Audio Filters
30 kHz LOW-PASS FILTER
3 dB Cutoff Frequency: 30 kHz ±2 kHz,
Rolloff: Third-order Butterworth; 18 dB
per octave or 60 dB per decade.
80 kHz LOW-PASS FILTER
3 dB Cutoff Frequency: 80 kHz ±4 kHz.
Rolloff: Third-order Butterworth; 18 dB
per octave or 60 dB per decade.
Plug-in Audio Filters
CCIR WEIGHTING FILTER (CCIR rec, 468-2)
Deviation from Ideal Response:
±0.1 dB at 6.3 kHz.
±0.2 dB, 6.3 kHz to 7.1 kHz.
±0.4 dB, 7.1 kHz to 10 kHz.
±0.5 dB, 200 Hz to 6.3 kHz.
±1.0 dB, 31.5 Hz to 200 Hz, 10 kHz to
20 kHz.
±2.0 dB, 20 kHz to 31.5 kHz.
C-MESSAGE WEIGHTING FILTER (Per BSTM 41004)
Deviation from Ideal Response:
±0.1 dB at 1 kHz.
±1.0 dB, 60 Hz to 5 kHz.
Plug-in Audio Filters
400 Hz HIGH-PASS FILTER
3 dB Cutoff Frequency: 400 Hz ±40 Hz.
Rolloff: Seventh-order Butterworth;
42 dB per octave or 140 dB per decade.
CCITT WEIGHTING FILTER (CCITT rec. P53)
Deviation from Ideal Response:
±0.2 dB at 800 Hz.
±1.0 dB, 300 Hz to 3 kHz.
±2.0 dB, 50 Hz to 3.5 kHz.
±3.0 dB, 3.5 kHz to 5 kHz.
Plug-in Audio Filters
CCIR/ARM WEIGHTING FILTER (CCIR rec. 468-2,
average-responding meter, Dolby Labs Bulletin No. 19/4)
Deviation from Ideal Response:
Same as listed under CCIR
WEIGHTING FILTER above.
“A” WEIGHTING FILTER
(IEC rec. 179 and ANSI S1.4,
type 1 sound-level meter)
Deviation from Ideal Response:
±0.1 dB at 1 kHz.
±0.5 dB, 20 Hz to 10 kHz.
±1.0 dB, 10 kHz to 20 kHz.
10
HP 8903B and HP 8903E General Specifications
HP 8903B REAR-PANEL FEATURES
HP-IB Connector.
Front/Rear-Panel Outputs
Supplemental Characteristics
RECORDER OUTPUTS (HP 8903B only):
X-axis: 0-10 Vdc corresponding to log
Y-axis: 0-10 Vdc corresponding to
Penlift: TTL output.
MONITOR OUTPUT:
HP 8903E REAR-PANEL FEATURES
HP-IB Connector .
X-Y recorder outputs and PENLIFT control
for swept measurement.
MONITOR output provides a scaled output of the input
signal. In SINAD, distortion, and distortion-lev el modes , the
fundamental is removed .
of oscillator frequency. Output
resistance 1k
displayed value and entered plot
limits. Output resistance 1 k
Output impedance 600
mode: provides a scaled output of the
input signal. SINAD, distortion, and
distortion-level modes: provide a
scaled output of the input signal with
the fundamental removed.
Ω
.
Ω
. AC- level
Ω
.
HP 8903K 42 volts peak, low side to
ground, 425 volts peak,
differentially or high side to ground.
CMRR:
> 60 dB, 20 Hz to 1 kHz, V
> 45 dB, 20 Hz to1 kHz.
> 30 dB, 20 Hz to 20 kHz.
< 2V.
in
Supplemental Characteristics
Typical CMRR from 20 Hz to 100 kHz with input voltage of
6 volts.
General
TEMPERATURE:
REMOTE OPERATION:
HP-IB COMPATIBILITY: SH1, AH1, T5, TE0, L3, LE0,
POWER: 100, 120, 220, or 240 V (+5,–10%);
WEIGHT:
operating, 0
o
– 55
HP-IB. All functions except the line
switch, low-terminal ground switches,
source output-impedance switch
(HP 8903B only), and the X10- and
÷10-increment keys (HP 8903B only),
are remotely controllable. The
HP 8903E has many special functions
which can only be accessed via
HP-IB commands.
SR1, RL1, PP0, DC1, DT1, C0, E1.
48 –66 Hz.
100 or 120 V (+5, –10%); 48 –440 Hz.
100 VA maximum.
HP 8903B net 12.3 kg (27 lb.); shipping
o
C to 75 oC.
C to 55 oC; storage,
16.4 kg (36 lb.).
Analyzer Input
INPUT TYPE: Balanced (full differential).
INPUT IMPEDANCE:
MAXIMUM INPUT: Maximum peak input voltage,
HP 8903B 425 volts peak, applied differentially or
100 kΩ ±1% shunted by
<300 pF, each side to ground.
(In dc-level made the input resistance is
101 kΩ
any combination of ac and dc:
between either input and ground.
±1%.)
HP 8903E net 11.8 kg (26 1b.); shipping
15.9 kg (35 lb.).
DIMENSION:
146 mm H x 425 mm W x 462 mm D
(5.75 x 16.8 x 18.2 in.).
HP SYSTEM II SIZE: 5-1/4 H x 1 MW x 17 D.
EMI: Radiated interference is within the
requirements of RE02 of MIL STD 461B
and FTZ 526/527.
11
CONDUCTED AND RADIATED SUSCEPTIBILITY:
meets the requirements of methods
CS01, CS02, and RS03 (1V/meter) of
MIL STD 461B dated 1980.
Plug-in Filter Ording Examples
Here are two examples of how the plug-in filters might
be ordered:
ORDERING INFORMATION
ANALYZER MAINFRAMES
HP 8903B AUDIO ANALYZER
Option 001: rear panel input and output
Option 910: provides additional operation/
calibration manual [08903-90079) and
two service manuals (08903-90062)
Option 915: add service manual (08903-90062)
Option W30: 3-year return repair service
HP 8903E DISTORTION ANALYZER
Option 001: rear panel input and output
Option 910: provides additional operation/
calibration manual (08903-90053) and
two service manuals (08903-90065)
Option 915: add service manual (08903-90065)
Option W30: 3-year return repair service
OPTIONS FOR BOTH HP 8903B
AND HP 8903E
Option 907: front handle kit
Option 908: rack flange kit
Option 909: rack flange kit with front handles
INTERNAL PLUG-IN
FILTER OPTIONS
First Example HP 8903B
One Option 010
Total $
Explanation:
This HP 8903B has a 400 Hz high-pass filter in the left slot
and no filter in the right slot.
Second Example HP 8903E
One Option 012
One Option 055
Total $
Explanation:
This HP 8903E has a CCIR weighting filter in the left slot
and an “A” weighting filter in the right slot.
For more information about Hewlett-Packard Test & Measurement products, applications, services and for a current sales
office listing, visit our web site, http://www.hp.com/go/tmdir.
You can also contact one of the following centers and ask for a
test and measurement sales representative.
Two band-limiting low-pass filters are standard. Optional
high-pass and weighting filters can be fitted to match your
requirements.
Both the HP 8903B and HP 8903E have two plug-in filter positions which can be loaded with any of six optional filters. The standard HP 8903B and HP 8903E
come with no plug-in filters. You must order the appropriate filter options if you wish to have any of the filters
listed in the next column. Each filter option ordered
adds additional cost to the instrument.
FILTER OPTIONS
Option Numbers
Filters Price
400 Hz high-pass
CCITT weighting filter
CCIR weighting filter
C-MESSAGE weighting filter
CCIR/ARM weighting filter
“A” weighting filter
Filter Positions
Left
010
01 1
012
013
014
015
Right
050
051
052
053
054
055
United States:
Hewlett-Packard Company
Test and Measurement
Call Center
PO Box 4026
Englewood, CO 80155-4026
1- 800-452-4844
Canada:
Hewlett-Packard Canada Ltd.
5150 Spectrum Way
Mississauga, Ontario
L4W 5G1
(905) 206-4725
Europe:
Hewlett-Packard
European Marketing Centre
P.O. Box 999
1180 AZ Amstelveen
The Netherlands
Japan:
Hewlett-Packard Japan Ltd.
Measurement Assistance
9-1, Takakura-cho,
Hachioji-shi,
Tokyo 192, Japan
(81) 426 56 0732
Fax (81) 426 56 7840
Latin America:
Hewlett-Packard
Latin American Region
Headquarters
5200 Blue Lagoon Drive
9th Floor
Miami, Florida 33126 U.S.A.
(305) 267-4245/4220
Australia/New Zealand:
Hewlett-Packard Australia Ltd.
31-41 Joseph Street
Blackburn, Victoria 3130
Australia
1 800 629 485
Asia Pacific:
Hewlett-Packard
Asia Pacific Ltd.
17-21/F Shell Tower,
Times Square,
1 Matheson Street,
Causeway Bay,
Hong Kong
Tel: (852) 2599 7777
Data subject to change
©Hewlett-Packard Company 1998
Printed in U.S.A. 1/98
5953-8429
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