Metrix HI-903 User manual

HI-903 HARDY SHAKER
Installaon Manual
DOC# 100928 • REV A (October 2017)
1180
1. OVERVIEW
The METRIX Model HI-903 Portable
Vibraon Calibrator provides a eld
tested method for on-the-spot dynamic
vericaon of accelerometers, velocity
pickups and non-contact displacement
transducers. Oponal mounng xtures
and hardware needed to connect
transducers to the HI-903 mounng
plaorm are available upon request.
A closed-loop control algorithm provides
enhanced stability and accuracy of
frequency and amplitude levels.
The HI-903 incorporates a built-in
sine wave oscillator, power amplier,
electrodynamic shaker, NIST traceable
reference accelerometer, digital display,
and internal memory. The HI-903 is
completely self-contained and operates
on baery or AC power.
The built-in reference accelerometer
is aached permanently to the shaker
armature, maximizing the accuracy
between the reference accelerometer
and the test transducer. The HI-903 is
designed to provide long-term reliable
performance over the frequency range of
7 Hz to 10 kHz. The HI-903 can be used
for a variety of applicaons that include:
• Vericaon and calibraon of
vibraon transducers and related
vibraon test systems
• Vericaon of connector and cabling
integrity
Conrm machine vibraon alarm trip
points are set properly and ensure
end-to-end funconality of vibraon
monitoring systems.
Notes
• Loads of up to 800 gram (28.3
oz) can be mounted directly to
the HI-903 mounng plaorm.
Larger loads may be applied to the
plaorm, however, if prolonged
tesng of a heavy load is planned,
we recommend using an external
transducer suspension system.
Under these condions the vibraon
waveform should be viewed on the
oscilloscope to aid in posioning
the test transducer and plaorm to
reduce distoron that can occur with
very heavy weights.

Doc# 100928 • HI-903-Shaker • October 2017-RevA Page 2 of 33
• The HI-903 should always be operated on a stable, at surface.
The HI-903 is designed for eld test applicaons but care must be taken to maintain
the integrity of the mounng plaorm assembly
• Hearing protecon recommended when operang the HI-903 for an extended
amount of me
Accessories
Accessories pictured below are included with each HI-903 Portable Vibraon Calibrator.
Mounng Wrench
1-Mounng Pad
2-1/4-28 to 1/4-28 Adapter
3-10-32 to 1/4-28 Adapter
Universal Power Supply and Plug Adaptors Acessory Pouch
USB Flash Drive Pre-Loaded with Report Generang Worksheet
12
3

Doc# 100928 • HI-903-Shaker • October 2017-RevA Page 3 of 33
2. BASIC OPERATION
For the basic operaon of the HI-903, a vibraon sensor and appropriate cable
are needed. Typically the HI-903 is used as a vibraon excitaon source and as a
readout device with the vibraon sensor connected to the HI-903’s Test Sensor BNC
Input. Alternavely, the HI-903 unit can be used to test dierent types of vibraon
equipment (i.e. a vibraon meter or vibraon monitoring system), in which case
the sensor will be directly connected to the vibraon measurement equipment and
the HI-903 is used just as a controlled excitaon source.
Test Setup
1. Mount your sensor to the HI-903 mounng plaorm
• The HI-903 sensor mounng plaorm is threaded for a ¼-28 stud. Select
an appropriate adaptor for mounng the sensor.
• While ghtening the sensor, secure the HI-903 mounng plaorm with
the supplied wrench to prevent damage from torque
2. Connect sensor under test (SUT) to “Test Sensor In.” Make sure that
connecons are secure.
3. Power the unit ON by pressing and holding the FREQUENCY dial for 3 seconds.
NOTE: It is good pracce to perform calibraons on baery power. Disconnecng
from line power ensures a power surge will not cause the calibrator to power down
during test. If excess current is detected during use, the portable calibrator shuts
down to prevent damage.
Selecng Input Mode
4. The HI-903 can accept ICP® as well as AC voltage and AC current output
sensors. Press and hold the AMPLITUDE dial to select between ICP®, Voltage Mode
or Modulated Current mode. Modulated Current mode is only available if the 9110-
MC rmware opon is ordered, otherwise user will not see this mode as an opon.
Note: ICP® (or IEPE) mode sensors are the most popular type of accelerometer
transducers and require a 2 mA to 20 mA constant current supply to operate.
The HI-903 unit supplies the necessary constant current to power this class of
sensors. Voltage output sensors are typically moving coil velocity sensors but
can also be the voltage output of a signal condioner associated with any type
of vibraon transducer such as the output from the probe driver in a proximity
probe system. Refer to the Sensor Signal Measurement Electronics (SUT Input
Characteriscs and Consideraons) for details.
Seng the Frequency and Amplitude Units
5. Select the correct Frequency Units for your test by pressing the FREQUENCY
dial to enter into the CALIBRATION OPTIONS menu:
• Use the FREQUENCY dial to highlight TEST SETTINGS then press.
• Within the Test Sengs Menu rotate the FREQUENCY dial to
highlight FREQUENCY UNIT then press to toggle between Hertz and
CPM.
6. Select the correct Amplitude Units for your test by pressing and releasing the
AMPLITUDE dial. The following opons are available:

Doc# 100928 • HI-903-Shaker • October 2017-RevA Page 4 of 33
Acceleraon Velocity Displacement
g’s pk
g’s RMS
m/s2 pk
m/s2 RMS
in/s pk
in/s RMS
mm/s pk
mm/s RMS
mils p-p
µm p-p
7. Select the desired vibraon amplitude and frequency for tesng by turning the
AMPLITUDE and FREQUENCY dials clockwise to increase or counter clockwise to
decrease the seng.
•Slow Turns – sengs will increase or decrease by single steps
•Fast Turns – sengs will increase or decrease by larger increments
Record and Save Calibraon Points
8. Once the frequency and amplitude are set to desired values, with the le
menu set to “Save Point,” press the FILE dial to store the calibraon data point.
9. Repeat steps 7 through 9 to set the frequency and amplitude to increment to
the next calibraon data point and save.
Compleng and Storing Record to Memory
10. Once all data points have been saved in a record and record is complete, rotate
FILE dial and press it to select “End Record.”
• The screen will prompt with:
11. Rotate the FILE dial to “Edit” to enter the model number, serial number and
axis. The FILE menu for this screen also includes the tools “Next” and “Back.”
• Push the FILE dial to choose “Next,” which goes to the next save
screen.
12. To “Save” the record without inpung an annotaon, press the FILE dial two
more mes.
13. Rotate the FILE dial to “Edit” and press to store any annotaons or addional
notes (such as technician inials, etc):
• Turn the FILE dial to the le and right to select each individual leer
or number you wish to input as part of an annotaon. Push the FILE
dial to save each character.
• Rotate the FILE dial and select “Save.” This will save all data points in
the listed record number. The record number shown on the screen
increments automacally.

Doc# 100928 • HI-903-Shaker • October 2017-RevA Page 5 of 33
Transfer Records to USB Flash Drive
14. Rotate FILE dial and press to select “Tools.”
15. Rotate FILE dial and press to select “USB Menu.”
• A USB ash drive must be connected to the unit. The USB must be
formaed to FAT32. You can use the HI-903 or a PC to format the
ash drive.
16. To copy all data points and records to a USB Flash Drive, rotate FILE dial and
press to select “Copy All Records.”
• This will leave current records on unit memory and also create a
copy on the USB.
17. To move all data points and records to USB, rotate FILE dial and press to select
“Move All Records.”
• This will remove current records on unit memory and move onto the
USB.
Note: The USB hardware may not always recognize a USB ash drive if it is plugged
into the USB port while the HI-903 is in sleep mode. Metrix recommends connecng
the USB drive while the HI-903 is on and operaonal.
Powering O
18. Suggested Best Pracce: Before powering the unit OFF, reduce the vibraon
amplitude. The HI-903 retains the sengs used prior to shutdown when it
is powered back ON. Reducing the amplitude prior to shutdown ensures the
sensor under test will not be jarred when the HI-903 is powered ON.
19. Power the unit OFF by pressing and holding the FREQUENCY dial for
approximately 3 seconds.
• To preserve baery charge, the HI-903 will automacally power o
aer 20 minutes of inacvity when not plugged in to the charger.
Aer Tesng
20. Suggested Best Pracce: Plug the HI-903 into an AC power source when not in
use. This will ensure the baeries are fully charged for your next test and also
help to maximize the lifespan of the baeries.
21. Periodic calibraon checks are recommended:
• A dedicated “vericaon sensor” can be used to check the system
readings and results. By using a dedicated sensor, you can ensure
that the system is providing the same result during each test. Metrix
oers Model 9105D for this purpose. (The 9105D includes a transfer
standard reference accelerometer and ICP sensor signal condioner,
for system vericaon of portable vibraon calibrators).
• The HI-903 should be returned to Metrix for regular recalibraon
(recommended annually - Service Code 9100-CAL01) or for any
maintenance or repair. The most current factory calibraon date or
the calibraon due date is displayed on the LCD screen during the
HI-903 boot up sequence. The default due date is set for 12 months
aer the last factory calibraon, but the calibraon interval can be
user dened to be anywhere from 1 to 72 months, or set up to never
expire.
• NOTE: The aforemenoned Model 9105D allows users to duplicate
Metrix’s calibraon process without returning the shaker to the
factory.

Doc# 100928 • HI-903-Shaker • October 2017-RevA Page 6 of 33
Report Generaon Workbook
Calibraon data can be saved into the HI-903’s internal memory and easily
exported to a personal computer using a USB Flash Drive.
The HI-903 Portable Vibraon Calibrator includes a pre-formaed USB Flash
Drive with a Microso Excel Report Generaon Workbook for the creaon of
customizable calibraon cercates. The Excel le provides an intuive interface
which allows a user to create and print a calibraon cercate with just a few
mouse clicks. In order to use the le, make sure macros are enabled, otherwise
Excel won’t be able to load data and create the cercates.
The Excel workbook consists of the following worksheets or tabs:
• FRData – Use this tab to create a frequency response cercates in just 2
steps:
1. Clicking on Import Data from File buon prompts the user to select and import
a .pvc calibraon data le previously created by the HI-903
2. Once data is loaded into the table, click View Cercate to see and print a
calibraon cercate containing the frequency response data (the reference
frequency for the calibraon cercate is 100Hz and can be changed by the
user as needed)
Note: If tesng a charge-mode accelerometer and calibraon cercate
in pC units is desired, click the box at top le of the FRData tab and enter
the sensivity of the charge amplier in the “mV/pC” box located at cell
D8. See the secon “Calibrang Charge-Mode Accelerometers” for more
informaon.
• LINData – Use this tab to create linearity response cercates. The worksheet
applies linear regression to interpolate the data. The Max Linearity is calculated
for the worst deviaon of a parcular point from the best-t straight line (BFSL)
of all tested points. The table also displays the specic results at each test level.
The LINData worksheet has 2 tables. The le table should be used for creang
dynamic linearity data calibraon cercates in just 2 steps:
1. Click on Import Data from File to select and import a .pvc calibraon data le
previously created by the HI-903
2. Once data is loaded into the table, click View Cercate to see and print a
calibraon cercate containing the linearity response data. The worksheet
expects the data points to be taken at the same frequency (speed). A checkbox
opon labeled Set Y-intercept to zero is available to force the interpolaon to
go through the origin point.
The right table in the LINData worksheet is used to create a DC proximity probe
curve or linearity cercate for 4-20 mA vibraon transmier. Creang a DC
proximity probe curve requires the proximity probe adaptor kits and a DC
voltmeter (not included). Creang a linearity cercate for a 4-20 mA vibraon
transmier requires DMM set to DC current input. A 24 VDC power supply may
also be needed:
1. Select the appropriate vibraon scale (Acceleraon, Velocity or Displacement)
by clicking in cell H12 and selecng from drop down menu.
2. Select the appropriate units (g’s pk, g’s RMS, m/sec2 pk, m/sec2 RMS, in/sec pk,
in/sec RMS, mm/sec pk, mm/sec RMS, mils p-p or µm p-p) in cell H13. Make
sure cell H12 is set to the right scale rst.
3. Enter known amplitude and output for the rst test point next to “Starng
Point” and repeat for each addional test point moving down the table.
Once data is entered into the table, click View Cercate to see and print a
calibraon cercate containing the linearity response data.
• FRCert - Displays the frequency response calibraon cercate using the

Doc# 100928 • HI-903-Shaker • October 2017-RevA Page 7 of 33
current data and informaon from FRData.
• LINCert - Displays the linearity response calibraon cercate using dynamic
linearity data from LINData.
• SLINCert - Displays the linearity response calibraon cercate using stac
linearity data from LINData.
• Route Creator – If rmware opon HI-903 CALROUTE is ordered, this tab can
be used to create semi-automated tests with instant pass/fail nocaon for
almost any vibraon sensor. See “Calibraon Route” for more informaon.
Addional Features
Delete
The “Delete” feature can be found under the FILE dial > “Delete.” When “Delete” is
selected, the shaker will stop moving and four opons will appear:
1. “Delete Point” will delete a current point.
2. “Delete Record” will delete the enre current record.
3. “Delete All” will delete all data points and all records that are stored on the
internal unit memory.
4. “Back” will return to the main screen.
USB Opons
The “USB Opons” feature can be found under the FILE dial > “Tools” > “USB
Menu” > “USB Opons.” When “USB Opons” is selected, the following
informaon will appear on the screen:
• “Status” – USB ash drive connected or not connected.
• “Paron” – Format of USB ash drive connected to the unit.
• “Available” – Memory space available on USB ash drive.
• “Required” – Space required to save all records on USB ash drive.
And the following acons are available:
• “Eject Drive” will safely eject the USB ash drive from the unit.
• “Format USB” for formang the USB ash drive. (FAT32 paron)
• “Back” to go back to the USB Menu.
Date and Time
The “Date and Time” feature can be found under the FILE dial > “Tools” > “Opons”
> “Date and Time.”
1. Press the FILE dial to select “Adjust.”
2. Turn the AMPLITUDE dial to the select the current month, day and year and
push the FREQUENCY dial to conrm or the AMPLITUDE dial to change.
3. Press the AMPLITUDE dial to select “yes” this is correct.
4. Turn the AMPLITUDE dial to select the current hours and minutes then push
the FREQUENCY dial to conrm the me is correct.
5. Press the AMPLITUDE dial to select “yes” this is correct.
Calibraon Interval
The “Calibraon Interval” can be adjusted under the FILE dial > “Tools” > “Opons”
> “Calibraon Interval.”
1. Select “Adjust” and press FILE dial.
2. Turn AMPLITUDE dial to select number of months for Calibraon Interval.
• Suggested Best Pracce: 12 months. The calibraon interval can be
dened to be anywhere from 1 to 72 months, or set up to never expire.
3. Press FREQUENCY dial to conrm selected Calibraon Interval.

Doc# 100928 • HI-903-Shaker • October 2017-RevA Page 8 of 33
Traceability
The “Traceability” feature can be found under FILE dial > “Tools.”
1. Press FILE dial to select “Traceability.” A screen with the following informaon
will appear:
• Model
• Serial Number
• Firmware Revision Number
• Calibraon Date
• Reference Sensor Sensivity
• PRD-P
• NIST Traceability Number
• PTB Traceability Number
2. Press FILE dial to go back to main screen and shaker will go back to shaking.
Test Sengs
The “Test Sengs” menu can be found by pressing FREQUENCY dial > “Test
Sengs.” A screen with the following will appear, use the FREQUENCY dial to
highlight and toggle all sengs:
• Back – returns user to “Calibraon Opons” menu
• Cal Route: N/A, Acve or o
o N/A indicates the Calibraon Route rmware opon has not
been purchased. Calibraon Route allows users to program semi-
automated test points with instant pass/fail nocaon. See
“Calibraon Route” secon for more informaon. Contact Metrix
to unlock this feature.
• Source: Internal or External
o If external is selected the shaker can be controlled with an external
source. See “Input/Output” for more informaon.
• Frequency Unit: Hertz or CPM (cycles per minute)
• Sensor Type: ICP®, Voltage or Modulated Current
o Use ICP® for most accelerometers, Voltage for proximity probes
and moving coil sensors, Modulated Current for high-temp turbine
vibraon sensors with AC current output. See “Selecng the Input
Mode” for more informaon. Modulated current is oponal;
contact Metrix to unlock this feature.
• Sensor Readout: mV/EU or mV
o Changes the display to show the sensor under test’s sensivity
(output voltage divided by input vibraon, mV/EU) or the sensor
under test’s raw AC output voltage.
Amplitude Units
Amplitude units that are seldom or never used can be turned o by using the
“Amplitude Units” feature, found by pressing FREQUENCY dial > “Amplitude Units.”
The “Amplitude Unit Screen” shows all 10 available amplitude scales on model
HI-903 Portable Vibraon Calibrator. Use the FREQUENCY dial to highlight each
scale and press the dial to toggle the scale on or o. A lled circle next to the
scale indicates it is acve. An empty circle next to the scale indicates it is inacve.
Inacve scales do not appear when cycling through scales using the AMPLITUDE
dial during normal operaon.

Doc# 100928 • HI-903-Shaker • October 2017-RevA Page 9 of 33
To go back to the “Calibraon Opons” menu use the FREQUENCY dial to highlight
“Back” then press.
Calibraon Route
Firmware Opon: HI-903 CALROUTE
Model HI-903 must be ordered with rmware opon 9110-CALROUTE for the
Calibraon Route features to be available. This rmware can be added at any me.
Contact Metrix for ordering and installaon informaon.
The Calibraon Route rmware allows users to create and run semi-automated
frequency response and amplitude linearity tests for vibraon sensors on model HI-
903 with instant pass/fail nocaon. Tests or “routes” are created in the Report
Generaon Workbook then uploaded to the HI-903 via supplied USB drive. Once
uploaded the test is acvated. But the test can also be de-acvated at any me,
pung the HI-903 back into manual operaon mode. When a Calibraon Route
is acve the HI-903 can only adjust to the pre-dened amplitude and frequency
points that have been programmed.
Creang A New Test (Route)
Version 2010 or later of Microso Excel® is required for the CalRoute features
in Report Generaon Workbook to operate correctly. Drop-down arrows for
frequency and amplitude units may not appear if using older versions of this
soware.
1. Open the Report Generaon Workbook (version 3.0.2 or later required)
using Microso Excel®
2. At boom, select the Route Creator tab
3. Route Name: Enter the name of the test in cell B7 next to “Route Name”.
When the test le is created and saved the le name will be this value
followed by “_Route.pvc”.
4. Frequency Unit: Use the drop down arrow to choose the frequency unit
(Hertz or CPM) in cell B8. One cannot toggle between Hertz and CPM
during the test.
5. Amplitude Unit: Use the drop down arrow to choose the amplitude unit
(g pk, g RMS, m/sec2 pk, m/sec2 RMS, in/sec pk, in/sec RMS, mm/sec pk,
mm/sec RMS, mils p-p or µm p-p) in cell D7.
6. Amplitude: If desired, enter the amplitude for all test points in cell B9 next
to “Amplitude”. This is useful for a frequency response test where all test
points will have the same amplitude value. If creang a linearity test leave
this cell blank since the amplitude values will change for each test point.

Doc# 100928 • HI-903-Shaker • October 2017-RevA Page 10 of 33
7. Sensor Type: Use the drop down arrow in cell F7 to select the sensor type
(ICP®, Voltage or Modulated Current).
8. Sensor MN: if desired, enter the sensor model number in cell F8. This
is oponal. The sensor model number that is entered will print on the
calibraon cercate. It can be changed at any me. If the model number
is not consistent leave this cell blank.
9. Lower Bound: in cell D8 enter the minimum sensivity value for the
sensor under test at each test point that will pass calibraon test. For
example, the minimum acceptable sensivity for 100 mV/g accelerometer
with +/- 5% sensivity tolerance is 95 mV/g, thus lower bound would be:
95.00.
10. Upper Bound: in cell D9 enter the maximum sensivity value for the
sensor under test at each test point that will pass calibraon test. For
example, the maximum acceptable sensivity for 100 mV/g accelerometer
with +/- 5% sensivity tolerance is 105 mV/g, thus upper bound would be:
105.00.
11. Press Table Auto-Fill. The grey cells in the table will automacally
populate with the values chosen in steps 3-10. All cells will populate. The
table is capable of creang a 30-point test. But any number of test points
can be programmed. Before creang the route le user must delete values
in cells for test points that should not be created (see example).
12. Enter the desired Frequency values for each test point in column A
beginning with cell A13. The test will be conducted in the exact order as
programmed. The rst test point will be as programmed in row 13; the
next will use row 14 values and so on.
a. The HI-903 can only simulate vibraon in CPM values that are
mulples of 60. I.e. 1800 CPM, 3600 CPM, 4200 CPM, etc. If a
value is entered that is not a mulple of 60, the HI-903 will adjust
down to the nearest CPM value that is a mulple of 60.
b. Example: 1900 CPM is entered as a test point. The HI-903 will
adjust to 1860 CPM and 1860 CPM will be displayed.
13. Enter the desired Amplitude values for each test point in column B
beginning with cell B13. Skip this step if all amplitude values have been
automacally populated using the Table Auto-Fill buon.
14. Modify any individual test point as desired. For example, most
accelerometers have a wider sensivity tolerance at extreme low and high
frequencies. User may wish to expand the upper and lower bounds for
certain test points.
15. Delete undesired test points. For example, a 10-point test only requires
rows 13-22. The Table Auto-Fill feature saves typing but one must delete
data from cells that are not needed. For a 10-point test rows 23-42 should
be blank thus they can be highlighted and cleared.
16.Press Create Route File. A .pvc le will be created, save this le to the USB
drive in the Calibraon_Route folder.
a. When prompted to save, open the USB Disk
b. Open the METRIX_PVC folder
c. Open the Calibraon_Route folder
d. Press save

Doc# 100928 • HI-903-Shaker • October 2017-RevA Page 11 of 33
Example Accelerometer Test (Route)
An example of a 10-point accelerometer test, created in the Report Generaon
Workbook, is shown above. Some helpful notes…
• When run, this test will shake the accelerometer at 1g pk at all points. If
the shaker cannot generate 1g pk it will output the maximum vibraon
possible given the sensor’s weight and test speed. The shaker will not
allow user to program points that can damage the shaker.
• The test will begin at 10 Hz and end at 5000 Hz, with test points at
50,100, 300, 500, 1000, 2000, 3000 and 4000 Hz as well.
• If the sensor under test’s sensivity is above 105 mV/g or below 95 mV/g
the HI-903 will alert the user that test point failed.
• The le name will be CaseAccel_Route.pvc, when uploading to the HI-903
one would choose this le.
• ICP® power is acve for all test points. If this test were applied to a self-
powered sensor data would be invalid. One would select “Voltage” for a
self-powered sensor such as a moving coil velocity transducer.

Doc# 100928 • HI-903-Shaker • October 2017-RevA Page 12 of 33
Example Proximity Probe Test (Route)
An example of a 10-point proximity probe test, created in the Report Generaon
Workbook, is shown above. Some helpful notes…
• This test will simulate vibraon at 3600 CPM for all test points.
• This is a linearity test. Vibraon will start at 1.0 mils p-p and escalate to
10.0 mils p-p. The sensor will be evaluated every 1.0 mils.
• The test is designed for a 200 mV/mil proximity probe with 5% tolerance.
Thus sensivity of 190-210 mV/mil passes calibraon. If outside those
values the HI-903 will indicate the test point has failed.
• The sensor type is voltage. This means ICP® power is turned o. The
proximity probe is being powered by its probe driver. To run this test the
technician must connect the output of the probe drive to “Test Sensor In”
on the HI-903.
• The name of the le will be ProxProbe_Route.pvc.
• The model number 330101 will print on each test report created using
this route. It can be modied on the cercate if desired to add thread
lengths, cable length, etc.
Loading & Acvang a Calibraon Test (Route)
With the calibraon test saved as a .pvc le to the Calibraon_Route folder on the
USB and the USB inserted into the port on the HI-903 the following instrucons
detail how to upload to model HI-903 and acvate:
1. Press the FREQUENCY dial to enter “Calibraon Opons” menu, rotate to
highlight TEST SETTINGS and press again to enter “Test Sengs” menu.
2. Use FREQUENCY dial to highlight and click selecon next to “Cal Route:”.
Selecon will be “O” or “Acve” depending upon previous status. When
clicked user will enter into “Route Opon” menu.
a. If display indicates “Cal Route: n/a” the HI-903-CALROUTE
rmware has not been purchased. Contact Metrix to add this
rmware to the HI-903.
3. Use FREQUENCY dial to highlight and click on LOAD FILE FROM USB
4. Up to six route les (tests) are shown. Use FREQUENCY dial to highlight
and click on desired le.

Doc# 100928 • HI-903-Shaker • October 2017-RevA Page 13 of 33
5. Display will indicate “Route Load Successful Acvate Now?” To acvate
press the AMPLITUDE dial.
a.To load to memory but not acvate the test press FREQUENCY.
The calibraon test is now loaded and acve. Rotang the FREQUENCY dial allows
user to scroll through programmed test points without saving data.
Execung the Semi-Automated Calibraon Test (Route)
The calibraon test has been created and saved to the USB. It has also been
uploaded and acvated in the HI-903 using the previous secon. The following
instrucons detail usage of the HI-903 while the pre-programmed test is acve. To
use the HI-903 in manual mode again the calibraon route must be de-acvated
(see next secon).
• With a Calibraon Route acve the HI-903 will only cycle to the pre-
programmed test points. The FREQUENCY dial can be used to cycle and
preview test points without saving data.
• Pressing the amplitude dial will not change amplitude scales while route is
acve.
• Data is sll stored to internal memory when Calibraon Route is acve if
FILE dial is pressed while “Save Point” is displayed. Delete, Save, Tools and
End Record funcons operate as previously detailed in “Basic Operaon”
secon.
1. Once the Calibraon Route is acvated shaker will vibrate at rst pre-
programmed test point. Use FILE dial to display “Save Point” then press
the dial.
2. A pass/fail indicaon is displayed. The frequency, amplitude, sensivity
of sensor under test, upper and lower bounds are shown. If sensivity
is between upper and lower bounds “Pass” is shown at top right. If
sensivity is outside of bounds “Fail” is displayed. Press FILE dial to
connue to next test point.
a. If test point fails technician can delete the point and try again
by using FILE dial to display “Delete” then press and make
appropriate selecon. Deleng the point will step the test back
to the previously failed test point.
3. Connue the test point-by-point by pressing the FILE dial with “Save
Point” displayed. The pass/fail screen will appear aer each point.
4. When test is complete the model and serial number entry screen is
displayed. Enter data as outlined in “Basic Operaon” secon or skip by
pressing FILE with “Next” displayed.
5. A nal data entry screen is displayed, with “Save” displayed press FILE to
save the calibraon test results to internal memory and begin next test.

Doc# 100928 • HI-903-Shaker • October 2017-RevA Page 14 of 33
Creaon of print-able test reports is done as previously menoned. Follow
instrucons in “Basic Operaon” secon to create frequency response and linearity
calibraon cercates in Microso Excel®.
Route Opon Menu
The Route Opon menu is accessed by pressing FREQUENCY dial then using the
dial to highlight and click on Test Sengs, then using the dial to highlight the text
next to Cal Route: and clicking on it. The menu has the following funconality and
the FREQUENCY dial is used to navigate and select:
• Back – returns to Test Sengs menu
• Acvate Route – acvates the calibraon test stored in memory
• Deacvate Route – returns the HI-903 to manual operaon, de-acvates
semi-automated test
• Load File From USB – shows a list of up to six pre-programmed tests
(routes) read from Calibraon_Route folder on USB drive
• Delete Route – returns the HI-903 to manual operaon and also deletes
the pre-programmed test from memory
• File Informaon – displays name of semi-automated test, number of test
points and date it was created. If no test is acve pressing le while this
opon is highlighted does nothing.
• Eject USB – allows user to safely remove the USB drive from HI-903
Denion of Frequency Units
• Hertz (Hz) is dened as the number of periodic cycles per second and it is
a standard unit for measuring signal frequency.
• CPM stands for Cycles Per Minute. CPM is commonly used for tesng
industrial sensors that monitor rotaonal vibraon. 1 Hz=60 CPM
Denion of Amplitude Units
• Root Mean Square (RMS) is a calculaon that takes the square root of
the average of the squared amplitudes from a set of data. This type of
measurement takes all amplitudes of a signal into account rather than just
one, making it an accurate tool for an overall calculaon.
• Peak (pk) bases calculaons on the highest value of the signal generated
during tesng. For a sinusoidal wave (as is produced by the HI-903), the
peak value is calculated by RMS* . The HI-903 does not measure a true
Figure: Sinusoidal Wave

Doc# 100928 • HI-903-Shaker • October 2017-RevA Page 15 of 33
peak value, but instead esmates the value mathemacally based upon
the RMS value.
• Peak to Peak (p-p) is a calculaon of the dierence between the highest
posive peak and the lowest negave peak of a recorded sine wave. The
p-p value is calculated as two mes the peak value.
• Gravitaonal acceleraon (g) is the acceleraon experienced naturally by
objects in earth’s gravitaonal eld. It is approximately equal to
9.80665 m/s2.
Mounng Basics
Connecng Sensor to HI-903 Plaorm
1. Mang surfaces of the mounng plaorm and sensor should be at,
parallel and free of dirt, paint, epoxy, scratches, etc.
2. Threads in plaorm, sensor and adaptor (if needed) must match to ensure
a proper t and that tesng is free of errors. Clean any worn threads with
a tap or die and coat them in silicone grease for best results.
3. An adaptor may be needed to connect the sensor to the armature. The
HI-903 plaorm requires a ¼-28 thread.
4. Silicone grease can be applied to the mang surfaces and threads to
ensure good mechanical coupling. This is parcularly important when
tesng at high frequencies.
5. For threaded sensors, please follow the sensor manufacturer’s torque
recommendaon.
Tightening and Loosening Connecons
1. When ghtening or loosening the connecon between the sensor and
the HI-903 mounng plaorm, secure the mounng plaorm with the
supplied wrench.
2. It is important to keep sensors and xtures centered and straight when
aaching them to the HI-903 mounng plaorm. This will ensure a stable,
even connecon and eliminate potenal alignment issues.
Input / Output
EXTERNAL SOURCE IN Input BNC
It is possible to drive the HI-903 by using an external signal source or a funcon
generator. First, connect a signal source to the EXTERNAL SOURCE IN BNC Input
located on the top le corner of the unit. To enable the EXTERNAL SOURCE
IN input, press the FREQUENCY dial to enter the “Calibraon Opons” menu
then rotate FREQUENCY dial to highlight and click on TEST SETTINGS. Next, use
FREQUENCY dial to highlight selecon next to “Source:” and toggle between
“Internal” and “External” by pressing the dial, select “External”.
1. When in Ext Sig mode, the vibraon amplitude is measured and displayed on
the screen, however, the frequency and amplitude of the shaker is controlled by
the external source, not by the HI-903. The frequency of the input signal is not
displayed on this mode.
2. The amplitude and sensivity values displayed on the screen are for reference
only. The measurements are not accurate while in Ext Sig mode and do not fall
under the published specicaons for the product.

Doc# 100928 • HI-903-Shaker • October 2017-RevA Page 16 of 33
Do not exceed 1V RMS! Overdriving the unit may cause clipping,
unwanted distoron and damage to the unit
MONITOR REFERENCE OUT Output BNC
The HI-903 is controlled by an internal shear mode quartz reference accelerometer.
The voltage output of the reference accelerometer can be monitored through the
available MONITOR REFERENCE OUT BNC output by connecng it to a readout
device (e.g. voltmeter or oscilloscope).
Diagnosc Screen
The diagnosc screen can be displayed by holding down the le buon for
approximately 2 seconds. This screen displays informaon about the operaon of
the HI-903. The informaon found in this menu is displayed in real me:
Reference ICP Bias Voltage
Test Sensor Bias Voltage
Test Sensor Type: Voltage, ICP® or Modulated Current
Signal Type: Internal or External
Reference THD
Sensor THD
Exit the diagnosc screen by pressing the le buon.
TEST SENSOR IN Input BNC
The HI-903 provides the capability to measure the test sensor’s voltage signal,
replacing the need for an external DMM or data acquision. The input electronics
can be congured for Voltage, ICP® or Modulated Current mode as described in
Step 4 of Basic Operaon earlier in this manual.
The TEST SENSOR IN input BNC is capable of measuring a voltage input of up to
10V AC pk-pk. As an ICP® sensor signal condioner, it measures up to 10V pk-pk AC
signal while supplying 5mA ICP® constant current at 25V DC. While in ICP® mode,
the input circuit is also monitoring the ICP® sensor Bias Voltage and will indicate a
Bias Fault when the DC voltage is below 2V DC or above 15V DC. The open circuit
voltage of the ICP® supply will be 25V DC. This open circuit and the ICP® Bias
Voltage may be checked using the diagnosc menu.
3. THEORY OF OPERATION
Instrumentaon
The Model HI-903 Portable Vibraon Calibrator internal electrical system is
comprised of several dierent mechanisms:
• Electrodynamic Shaker
• Power Amplier
• Reference Accelerometer
• Signal Generaon Electronics
• Sensor Signal Measurement Electronics
• LCD Digital Display

Doc# 100928 • HI-903-Shaker • October 2017-RevA Page 17 of 33
• 3 Dials with Detent and Integrated Pushbuons
• 12 VDC, 4 Amp Hr Solid Gel Baery
• External Charger
• Three dierent BNC ports: “External Source In,” “Monitor Reference Out” and
“Test Sensor In”
• USB Flash Drive Port
The LCD display connuously shows the frequency of the shaker drive signal and
the vibraon amplitude of the mounng plaorm as measured by the reference
accelerometer.
The reference accelerometer is a PCB Piezotronics ICP® quartz shear sensor,
integrated into the mounng plaorm. A calibraon “standard” maintained by
METRIX is used to calibrate the HI-903 as a complete system and provides NIST
traceability. Traceability informaon can be viewed under the tools menu as
described in the previous secon.
The power amplier is specically designed to provide the current required to drive
the electrodynamic shaker. The electronic signal processing system produces a
variable frequency sine wave to the power amplier, which becomes the source of
the driving signal to produce the vibraon at the mounng plaorm.
The frequency of the shaker drive signal is controlled by the front panel
FREQUENCY dial. The amplitude of the shaker drive signal is controlled through a
feedback loop, to maintain the stability of the actual moon. Adjusng the front
panel AMPLITUDE dial adjusts the target vibraon amplitude.
Pressing the AMPLITUDE dial toggles the amplitude measurement units through
the following choices if all units are acve:

Doc# 100928 • HI-903-Shaker • October 2017-RevA Page 18 of 33
Acceleraon Velocity Displacement
g’s pk
g’s RMS
m/s2 pk
m/s2 RMS
in/s pk
in/s RMS
mm/s pk
mm/s RMS
mils p-p
µm p-p
Users can de-acvate amplitude scales by using the “Amplitude Units” menu.
See the secon “Amplitude Units” for more informaon. If desired scale is not
appearing while pressing AMPLITUDE to cycle through scales, then it has likely
been turned o in the “Amplitude Units” menu.
Turning the FILE dial acvates the le menu. Turn the FILE dial to toggle between
the below opons and press the dial again to select.
Save Point End Record Delete Tools
Next
Edit
Back
Delete Point
Delete Record
Delete All
Back
USB Menu
Opons
Traceability
Back
Below are the opons to choose from when the USB Menu is selected. Turn the
FILE dial to the proper opon and press it to select.
Copy All Records Move All Records USB Opons
Eject
Format USB
Back
Below are the opons to choose from when the USB Menu is selected. Turn the
FILE dial to the proper opon and press it to select.
Date and Time Calibraon Interval Set Resistance Value
Adjust Adjust Adjust
Back Back Back
Pressing and holding the le buon will return the main calibraon screen from
any new level.
Baery and Charger
The Model HI-903 can be operated from AC line power or from its internal
rechargeable baery. When the external power supply is connected, it becomes
the primary power source, operang the unit while simultaneously charging the
baery.

Doc# 100928 • HI-903-Shaker • October 2017-RevA Page 19 of 33
NOTE: It is good pracce to perform calibraons on baery power. Disconnecng
from line power ensures a power surge will not cause the calibrator to power down
during test. If excess current is detected during use, the portable calibrator shuts
down to prevent damage.
Baery power is supplied by a sealed solid gel lead acid 12 VDC rechargeable
baery. The baery can be permanently damaged if completely drained. To
prevent damage, the HI-903 will automacally shut o when the baery power
level gets too low. Suggested Best Pracce: Keeping the baery fully charged
ensures the unit is always ready for use.
Under mild operang condions (lower mass transducers at lower test amplitudes),
a fully charged baery will allow the HI-903 to operate for up to 18 hours. The
charge life of the baery depends on both the length of use and the amount
of power (dependent upon payload, frequency and amplitude) required for a
parcular test. When tesng requires high vibraon levels, the charge life will be
shorter than during less rigorous tesng. For example, connuous tesng of 100
gram payload at 10 g pk will drain the baery charge in approximately 1 hour.
A Baery Charge Indicator is displayed on the LCD screen to approximate the unit’s
remaining charge life. Replacement baeries (Model 9100-BAT01) and power
supplies/chargers (Model Number 9100-PS01) are available from Metrix.
The HI-903 calibrators connuously monitor the state of baery charge during
operaon, storage and charging. During operaon, if the baery capacity falls
near minimum, the unit will shut o aer approximately 2 minutes of inacvity
rather than the usual 20 minutes. During storage, if the baery voltage falls near
the minimum, the unit will go into deep sleep, requiring connecon of AC power
and reset of me and date before resumpon of operaon. During charging, the
unit connuously displays charging indicaon and state of charge, depending upon
operaon level and me of charge.
Baery Informaon and Care
• The unit is delivered in a parally charged state. Fully charge unit
for 20 hours before using for the rst me. (The unit cannot be
overcharged by keeping it plugged into the power supply.)
• To recharge the unit, use only the universal power supply included.
All baeries lose energy from self-discharge over me and more
rapidly at higher temperatures. A full charge cycle can take up to 20
hours.
• If not used for a prolonged period of me, recharge every 2 months.
• Suggested Best Pracce: Charge unit fully prior to eld use. Recharge
the unit as soon as possible aer use.

Doc# 100928 • HI-903-Shaker • October 2017-RevA Page 20 of 33
4. SPECIFICATIONS AND PERFORMANCE
General
Frequency Range (for
acceleraon)
(operang, 100 gram payload)
7 Hz - 10 kHz 420 CPM - 600k CPM
Maximum Amplitude
(100 Hz no payload)
20 g pk
15 in/s pk
50 mils pk-pk
196 m/s2 pk
380mm/s pk
1.27mm pk - pk
Maximum Payload[1] 800 gram
[1] Operang range reduced at higher payloads. Reference manual for full details
Accuracy of Readout
MEASURED WITH 10 GRAM QUARTZ REFERENCE ACCELEROMETER
Acceleraon (30 Hz to 2 kHz) ± 3%
Acceleraon (7 Hz to 10 kHz) ±1 dB
Velocity (10 Hz to 1000 Hz) ± 3%
Displacement (30 Hz to 150 Hz) ± 3%
Amplitude Linearity (100 gram
payload, 100 Hz)
< 1% up to 10 g pk
Waveform Distoron (100 gram
payload, 30 Hz to 2 kHz)
< 5% THD (typical) up to 5 g pk
Units of Readout
Acceleraon (peak/RMS) g m/s2
Velocity (peak/RMS) in/s mm/s
Displacement (peak to
peak)
mils µm
Frequency Hz CPM
Test Sensor Sensivity mV/EU[2]
[2] EU can be [g], [m/s2], [in/s], [mm/s], [mils] or [µm].
SUT Specicaons
SUT input Voltage range 10V AC pk-pk
SUT ICP current 5mA
SUT Bias oset measurement range 0-25 V DC
SUT Bias Fault Voltage limits 2V/15V DC