Ludlum Measurements 4906AB Manual

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Model 4906AB System Checkout
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1. Prerequisites
a. Assembly
i. The procedure presented here is for the checkout of a fully assembled Model
4906AB Hand and Foot Monitor. Before performing this procedure, ensure the
unit is fully assembled.

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b. Power Supply
i. Verify that the Model 4906AB unit is connected to the required power supply.
Reference the Model 4906 Operator’s Manual for power specifications.
c. Gas Supply
i. Verify the Model 4906AB unit is connected to the required detection gas supply.
Reference the Model 4906 Operator’s Manual for gas type and flow specifications.
d. Firmware
i. Ensure all programmable circuit boards have been loaded with the latest revision of
the appropriate firmware. All circuit boards are programmed at the factory and do
not require new programming unless installing an update and instructed to do so by
LMI personnel. Circuit boards that require a firmware download are listed below.
•Host Board - Main and peripheral microcontrollers
•Hand and Foot Detector Boards – Main microcontroller
•Frisker Detector Boards – Main and peripheral microcontrollers
•Gas Control Board – Main microcontroller
e. Detector Board Voltage Calibration
i. All detector boards being checked out must have successfully completed a detector
board voltage calibration before completing this procedure. This calibration is
performed at the factory and does not need to be repeated unless detector board
malfunction is suspected or detector board voltage calibration data is cleared.
f. SBC Software
i. The SBC (Single Board Computer) that is the primary controller for the Model
4906AB must have all required software and drivers installed prior to completion of
this procedure. Required software is listed below.
•SBC operating system
•USB-to-serial cable drivers
•Monitor drivers (applicability based on monitor type)

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2. Needed Equipment
a. Keyboard
i. To perform the Model 4906AB Hand and Foot Monitor system checkout
procedure, a USB keyboard is recommended for software interface and data entry.
3. Visual Inspection
a. Physical Damage
i. Perform a thorough visual inspection for physical unit damage. Take particular note
of displays, covers, wires, indicator lights, and sensors. Superficial damage should
be corrected as needed. Damage that may cause functional problems must be
corrected before proceeding.
b. Serial Numbers
i. Verify each detector (Left Hand Back – LHB, Left Hand Palm – LHP, Right Hand
Back – RHB, Right Hand Palm – RHP, Left Foot – LF, and Right Foot - RF) is
clearly marked with a serial number. This requires the opening of detector covers.
The hand detector covers allow access to all hand detectors (one cover for both left
and right sides), the foot cover allows access to both left and right foot detectors,
and frisker serial numbers can be viewed on the mounted frisker probe. Opening
the hand cover requires a flathead screwdriver. Serial numbers should be expected
in a form similar to PRXXXXXX (example PR207281) for all detectors.

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ii. Verify the Model 4906AB Unit is marked with a unit serial number. This number is
stamped into the Power IO Panel located on the lower side portion of the column.
The number is in the format XXXXXX (example 344628).

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4. Power ON/OFF Test
a. The following power on/off tests are used to verify the Model 4906AB power
cycle functions are working correctly.
b. Power ON with Power Button
i. Power on the unit by pressing and releasing the POWER/RESET button located
on the power IO panel.
ii. Verify the following sequence occurs.
•The frisker clicking noise may be heard if a frisker is equipped.
•The yellow light stack light illuminates.
•The unit display screen turns on to display the SBC boot sequence, followed by
the operating system startup, and finally the Model 4906AB Supervisor
Operate (Main) screen.
a. Power OFF with Power Button
i. Power off the unit by pressing and releasing the POWER/RESET button.
ii. Verify the following sequence occurs.
•The Model 4906AB Supervisor software closes.
•The operating system shuts down.
•All light stack lights extinguish.

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5. Software Serial Number Verification
a. To ensure reported accuracy and detector traceability, the serial number on
each detector must be verified to match the serial number entered into the
Model 4906AB Supervisor software for the appropriate position. If the
detector serial numbers have not yet been entered in the software, enter the
serial numbers at this time.
b. Navigate to the Setup menu by selecting the Setup button on the Operate
(Main) screen. Enter the high-level password (default = 2222) and select the
Enter button.
c. Next, select the Detectors button to open the Detectors screen and navigate
to the General tab. Verify/enter the detector serial numbers and click the
Save button.

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d. If equipped with a frisker, the frisker serial number must be verified to match
the serial number entered in the Supervisor software, or it must be entered if
this has not yet been done.
e. From the Setup menu, select the Frisker button to bring up the Frisker screen.
Select the Detector tab and verify/enter the frisker serial number and click the
Save button.
f. In addition to detector serial number entry, the whole unit serial number must
be verified to match the serial number entered in the Supervisor software, or
entered if this has not yet been done.
g. From the Setup menu, select the Operational button to bring up the
Operational Setting screen. Select the General tab and verify/enter the Model
4906AB unit serial number and click the Apply button.

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6. SBC to Host Communication
a. To ensure proper Model 4906AB operation, the SBC must communicate to
the Host board via a special USB-to-serial data cable, verifying Host-to-SBC
communication is done by noting the absence of a hardware communication
system failure.
b. The Operate screen displays a System Failure message, indicating that a
hardware communication failure has taken place when communication
between the SBC and Host is lost or cannot be established.

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c. If a hardware communication error state does exist, the Supervisor COM port
setting must be verified. This can be done by navigating to the Setup menu
(click Setup then enter the high-level password).
d. Next, select the Operational button to view the Operational Settings screen.
Select the COM tab.
e. Verify the selected COM port is not COM1 or COM2. The selected COM
port should be the only COM port in the list that is neither COM1 nor
COM2. Select the correct COM port. It should be labeled COM3 or COM4.
Once the correct port has been selected, click the OK button.
f. Exit out of the Operational Settings back to the Setup menu using the OK
button, and clear the previous failure in the Scaler screen if not already clear.
g. Verify the hardware communication system failure has been eliminated.

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7. Firmware Number Verification
a. To verify that communication between the host board, SBC, and detector
boards, firmware numbers displayed by the Model 4906AB Supervisor
software must be verified to be valid.
b. Start with the host board firmware number. Navigate to the Setup menu by
selecting the Setup button on the Operate (Main) Screen. Enter the high-level
password (default = 2222) and click the Enter button.
c. Next, select the Detectors button to open the Detectors screen and select the
Firmware tab. The host firmware number is located in the upper, right
corner.

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d. Verify the host firmware number is a valid host firmware number. A valid
firmware number for the host looks similar to “420275R01N01.” The “01”
following the “R” and “N” must both be valid numbers greater than zero, not
“??” or “00.”
e. Now move to verification of the hand and foot detector board firmware
numbers. Remain on the Firmware tab of the Detectors screen to verify these
numbers.
f. Verify that each detector firmware number is a valid hand and foot detector
firmware number. A valid hand and foot detector firmware number looks
similar to “420474R01N01.” The “01” following the “R” and “N” must both
be valid numbers greater than zero, not “??” or “00.”
g. Finally, the frisker detector board firmware numbers must be verified.
Navigate to the Setup menu and select the Frisker button. Once the Frisker
screen is open, select the Detector tab. The frisker firmware number is
located in the upper, right corner.

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h. Verify the frisker firmware number is a valid frisker detector board firmware
number. A valid frisker detector board firmware number looks similar to
“420427R01N01.” The “01” following the “R” and “N” must both be valid
numbers greater than zero, not “??” or “00.”
8. Button/Relay Test
a. The button/relay test is intended to verify function of the buttons, relays, and
sensors that act as input and output devices to allow user interaction.
Navigate to the Buttons/Relays screen by opening the Setup menu and
selecting the Buttons/Relays button.

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b. Test the following user input/output devices as described.
i. Alarm Light
•Click the Turn On button in the Outputs group directly above the Alarm Off
indicator bar
•Verify the button text changes to Turn Off
•Verify the indicator bar turns red and text indicates Alarm On
•Verify the red Alarm light on all installed light stacks illuminates
•Verify the audible alarm sounds (Fast Beep)
•Click the Turn Off button in the Outputs group directly above the Alarm On
indicator bar
•Verify the button text changes to Turn On
•Verify the red Alarm light on all installed light stacks extinguishes
•Verify the audible alarm silences
•Verify the indicator bar turns gray and text indicates Alarm Off
ii. Fail Light
•Click the Turn On button in the Outputs group directly above the Fail Off
indicator bar
•Verify the button text changes to Turn Off
•Verify the indicator bar turns yellow and text indicates Fail On
•Verify the yellow Fail light on all installed light stacks illuminates
•Verify an audible alarm sounds (Slow Beep)
•Click the Turn Off button in the Outputs group directly above the Fail On
indicator bar
•Verify the button text changes to Turn On
•Verify the yellow Fail light on all installed light stacks extinguishes
•Verify the indicator bar turns gray and text indicates Fail Off
iii. Ready Light
•Click the Turn On button in the Outputs group directly above the Ready Off
indicator bar
•Verify the button text changes to Turn Off
•Verify the indicator bar turns green and text indicates Ready On
•Verify the green Ready light on all installed light stacks illuminates
•Click the Turn Off button in the Outputs group directly above the Ready On
indicator bar
•Verify the button text changes to Turn On
•Verify the green Ready light on all installed light stacks extinguishes
•Verify the indicator bar turns gray and text indicates Ready Off

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iv. Left Hand Sensor
•Place your left hand (or some other object) inside the left hand detector box
•Verify the Left Hand Sensor Clear indicator bar changes from gray to orange,
and the text changes from Left Hand Sensor Clear to Left Hand Sensor
Blocked
•Verify that the bar returns to gray with the Left Hand Sensor Clear message
once the left hand detector box sensor area is cleared
v. Right Hand Sensor
•Place your right hand (or some other object) inside the right hand detector box
•Verify the Right Hand Sensor Clear indicator bar changes from gray to
orange, and the text changes from Right Hand Sensor Clear to Right Hand
Sensor Blocked
•Verify that the bar returns to gray with the Right Hand Sensor Clear message
once the right hand detector box sensor area is cleared

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vi. Left Foot Sensor
•Place your left foot (or some other object) all the way forward in the left foot
position on the unit base
•Verify the Left Foot Sensor Clear indicator bar changes from gray to orange,
and the text changes from Left Foot Sensor Clear to Left Foot Sensor Blocked
•Verify that the bar returns to gray with the Left Foot Sensor Clear message
once the left foot area is cleared
vii. Right Foot Sensor
•Place your right foot (or some other object) all the way forward in the right foot
position on the unit base
•Verify the Right Foot Sensor Clear indicator bar changes from gray to orange,
and the text changes from Right Foot Sensor Clear to Right Foot Sensor
Blocked
•Verify that the bar returns to gray with the Right Foot Sensor Clear message
once the right foot area is cleared
viii. One Hand Button
•Press and release the One Hand button on the Model 4906AB main cabinet
•Verify the One Hand Button Not Pressed indicator bar changes from gray to
blue, and the text changes to One Hand Button Pressed
•Verify the Once Hand button indicator ring lights up blue
•After a short delay (less than 2-3 seconds), verify the One Hand Button
Pressed indicator bar changes from blue to gray, and the test changes to One
Hand Button Not Pressed

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ix. Alarm Acknowledge Button
•Press and release the Alarm Ack (Acknowledge) button on the Model
4906AB main cabinet
•Verify the Alarm Ack Button Not Pressed indicator bar changes from gray to
red, and the text changes to Alarm Ack Button Pressed
•Verify the Alarm Ack button indicator ring lights up red
•After a short delay (less than 2-3 seconds), verify the Alarm Ack Button
Pressed indicator bar changes from red to gray, and the text changes to Alarm
Ack Button Not Pressed

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9. Gas Flow Test
a. Communication Test
i. To determine if the Model 4906 host board is properly communicating with the Gas
Control board, verify the Gas Control board firmware number is valid.
ii. Navigate to the Gas Control Setup screen. Start by clicking the Setup button from
the Main (Operate) screen and entering the high-level password (default = 2222) to
view the Setup menu.
iii. Next, click the Gas Control button in the Setup menu. If no such button exists,
verify the Gas Control Enabled option under the Options tab of the Operational
Setup screen is set to Yes.
iv. Once in the Gas Control Setup screen, ensure the General tab is selected. The Gas
Control board firmware number can be viewed in the top, left corner of the screen.
v. Verify the firmware number is a valid gas control board firmware number. A valid
firmware number for the gas control board looks similar to “420424R01N01.” The
“01” following the “R” and “N” must both be valid numbers greater than zero, not
“??” or “00.”