Discovery MR750 3.0T System Service Methods
5690009-2EN Revision 4
Object ID: 00000018WIA30E31E20GYZ
Topic ID: id_13106455 Version: 7.1
Date: Oct 11, 2021 6:13:21 PM

Setting up and calibrating UPM - MNS

Prerequisites


Personnel requirements
Required persons	Preliminary requirements	Procedure	Finalization
1	-	30 minutes	5 minutes


Tools and test equipment
Item	Quantity	Part number	Manufacturer
RF Power Measurement Kit	1	Either 5307511-2 or 5307511-3 (Bird wattmeter)	-
Digital Multimeter	1	46-194427P84	-
3.0T 31P T/R Switch (available on site with customer)	1	2354050 (non-RoHS) 5409918 (RoHS)	-

Safety

Before working in any GE Healthcare MR suite or performing any GE Healthcare service procedure, you must:

Have read and understood all hazard conditions and safety requirements in the latest revision of the GE Healthcare MR Service Safety Manual (5452735).
Have successfully completed all relevant GE Healthcare Environmental Health and Safety (EHS) courses (or for non-GE employees, equivalent workplace training courses).
Comply with all site-specific training and workplace safety requirements.

If you have any safety concerns at any time, do not begin work or immediately stop work and move to a safe location. Immediately contact your supervisor or site safety officer for instructions on how to proceed.

Warning

Electrocution hazard

Hazardous voltage levels exist throughout the UPM cabinet.

Make sure that the RF amplifier is disabled when configuring the calibration tools.

About this task

This procedure provides instructions for both amplifier calibration and UPM calibration. It also covers both the AMT and CPC amplifiers.

The AMT amplifier has cable connections at the rear of the cabinet. The CPC amplifier has cable connections at the top of the cabinet.

If you are replacing a UPM board only (rather than performing a full MNS setup), start with Setting up software tool to calibrate UPM - MNS forward power.