RF Amp and UPM Functional Check

Prerequisites

Table 1. Personnel requirements
Required persons	Preliminary requirements	Procedure	Finalization
1	Not Applicable	15 minutes	5 minutes

Table 2. Tools and test equipment
Item	Quantity	Effectivity	Part number	Manufacturer
Power Measurement Kit	1	-	46-317724g1 or g2	-
25 KW 30 dB Attenuator (Dummy Load)	1	-	46317724p14	-
50 Ohm Terminator	1	-	46-265874p1	-
7/16Male -N Female Adapter (Attached in System Cabinet)	1	-	5166139	-

Table 3. Safety

DANGER

FATAL ELECTRIC SHOCK.

HAZARDOUS VOLTAGES PRESENT THROUGHOUT THE RF CABINET WHEN ENERGIZED.

DISABLE RF AMPLIFIER WHEN CONFIGURING THE CALIBRATION TOOLS.

Table 4. Required conditions
Condition	Reference	Effectivity
Properly calibrated RF Head, Body .	-	-

The UPM Functional checks for 1.5T consist of three automated tests:

Average power at TG=200
RF Inhibit test (Check that RF is disabled when inhibit condition)
Trip Test

All 3 automated tests must pass to ensure the correct operation of the Universal Power monitor system.

Run both Head and Body UPM Functional checks for the proper system type.

Inhibit TR faults. Disable the Driver Module in the System Cabinet,Figure 1. Move switch 2 to the TR Disable position.

Figure 1. Driver Module Front Switches
Place the RF ENABLE switch on front of exciter in the DISABLE (Down) position.
Remove the Body RF cable from J4. Connect the RF dummy load into J4. Use 7/16 Male - N Female Adapter attached in System Cabinet.

Note:
If the body section of the 1.5T CSA Max Power RF Output and Calibration procedure was just completed, configuration is the same. You can leave the head RF cable disconnected and body can keep the wattmeter in line. It will not change the outcome of the calibration.

Note:
7/16Male -N Female Adapter is located at System Cabinet Left Shelf. Remove left cover and find it. See Figure 2
Figure 2. Built In Service Tool

Figure 3. Plug the Dummy Load into J4, Body Out
Place the RF ENABLE switch in the ENABLE (Up) position.

This tool must see a Landmark only. Do not connect the head coil. Simply Landmark on the cradle where the Body Phantom would be.

Press Landmark.
Press Advance to Scan.
From the Common Service Desktop:
1. Select Calibration Tab
2. For the Class A/C service tool, select UPM Tool, or (For system running SV29.1 or later) RF Amp & Power Monitor tool, from the calibration menu and select Click here to start this tool
3. Figure 4shows an example of the RF Amp & Power Monitor tool.
  
  Figure 4. UPM Main Window
  (For System running before SV29.1/SV25.4)
  (For System running SV29.1/SV25.4 or later)
(For system running SV25.3 or earlier)
Setting Value
Task Calibrate UPM
RF Chain Body
Power Type Forward
(For system running SV29.1/SV25.4 or later)
Setting Value
Task Calibrate Power Monitor
RF Chain Body
Power Type Forward Power
Select the [Start] button.
Select Yes when the prompt asks if the hardware setup is correct.
After that, the tool takes full control and runs the 3 functional tests for whatever setup is currently active. The result of each test is compared against a Specification File on the system. Status should indicate Pass/Fail.

During the tests, the user will be prompted as test completes. Look in the error log to confirm that the tests completed successfully. The following illustrations show an example of pop ups and error logs that should be seen.

Figure 5. Body UPM Trip Question

Figure 6. Error Log Example
To proceed:
1. If any one of the tests fail, refer to Troubleshooting RF Amp and UPM.
2. If all 3 tests pass, proceed to 1.5T 1.5T HEAD RF Amp and UPM FUNCTIONAL CHECK

Inhibit TR faults. The Driver Module in the System Cabinet, (see Figure 1) . Move switch 2 to the TR Disable position.
Place the RF ENABLE switch on front of exciter in the DISABLE (Down) position.
Remove the head heliax able from J3 at the back of the RF Amplifier and connect it directly to the RF dummy load.

Note:
If the Head RF power out procedure was just completed, configuration is the same. You can leave the Body RF heliax cable disconnected and the head output can keep the wattmeter in line. It will not change the outcome of the calibration.

Figure 7. Setup for Head Output Measurement
Place the RF ENABLE switch in the ENABLE (Up) position.

Press Landmark
Press Advance to Scan
(For system running SV25.3 or earlier)
Setting Value
Task Calibrate UPM
RF Chain Head
Power Type Forward
(For system running SV29.1/SV25.4 or later)
Setting Value
Task Calibrate Power Monitor
RF Chain Head
Power Type Forward Power
Select the Start button.
Select Yes when the prompt asks if the hardware setup is correct.
After that the tool takes full control and runs the 3 functional tests and the UPM status should indicate Pass/Fail.

During the tests, the user will be prompted as test completes. Look in the error log to confirm that the tests completed successfully. The following illustrations show an example of pop ups and error logs that should be seen.

Figure 8. Head UPM Trip Question

Figure 9. Error Log Example
To proceed:
1. If all three tests pass, select Quit from the UPM Main Window
2. If any one of the tests fail, refer to Troubleshooting RF Amp and UPM.

Solution 1: Repeat the UPM Functional Test for the receive chain that failed. (Head or Body).
Solution 2:
1. Reset TPS
2. Repeat the UPM Functional Test for the receive chain that failed. (Head or Body).
Solution 3: Reboot the system.
Solution 4
1. Check if RF output power for the failed chain is within specification at TG=200. (Head or Body). If not, re-calibrate RF output power for the chain that failed. Perform Body and Head Maximum Power Setup and Calibration to check the RF output power.
2. Repeat the UPM Functional Test for the receive chain that failed. (Head or Body).

Upon successful completion of the functional check(s):