Home
Troubleshooting
Patient Handling
Physiological Acquisition Controller (PAC) diagnostics (ICE, SPU, FPGA)
Diagnostic procedures related to the Physiological Acquisition Controller (PAC), which include: a PAC manual test, a PAC respiratory test, a PAC power-up test, the Signal Processing Unit (SPU) to PAC IF loopback test, the SPU to PAC loopback diagnostic, the SPU to Field Programmable Gate Array (FPGA) loopback test, the SPU respiratory test, and the SPU cardiac diagnostic.
Doing the Signal Processing Unit (SPU) to Physiological Acquisition Controller (PAC) loopback diagnostic
The Signal Processing Unit (SPU) to Physiological Acquisition Controller (PAC) loopback diagnostic verifies that the ICE board can send data to the PAC module over the PAC's fiber optic cables.

Troubleshooting
- Diagnostics
- System
- Gradient
- Multi-Coil Quality Assurance (MCQA) Tool
- Cooling
- Patient Handling
  - Patient Handling Power Supply Troubleshooting
  - IRD troubleshooting
    Diagnose and fix issues with the 12.1 inch IRD screen.
  - Physiological Acquisition Controller (PAC) diagnostics (ICE, SPU, FPGA)
    Diagnostic procedures related to the Physiological Acquisition Controller (PAC), which include: a PAC manual test, a PAC respiratory test, a PAC power-up test, the Signal Processing Unit (SPU) to PAC IF loopback test, the SPU to PAC loopback diagnostic, the SPU to Field Programmable Gate Array (FPGA) loopback test, the SPU respiratory test, and the SPU cardiac diagnostic.
    - Doing the Signal Processing Unit (SPU) to Physiological Acquisition Controller (PAC) IF loopback test
      The Signal Processing Unit (SPU) to Physiological Acquisition Controller (PAC) IF loopback test verifies that the PAC TX and RX port on the ICE board (J38, J39) is functioning correctly.
    - Doing the Signal Processing Unit (SPU) to Physiological Acquisition Controller (PAC) loopback diagnostic
      The Signal Processing Unit (SPU) to Physiological Acquisition Controller (PAC) loopback diagnostic verifies that the ICE board can send data to the PAC module over the PAC's fiber optic cables.
    - Doing the Signal Protection Unit (SPU) to Field Programmable Gate Array (FPGA) loopback test
      The Signal Protection Unit (SPU) to Field Programmable Gate Array (FPGA) loopback test verifies the data path in the PAC I/F in the PSC FPGA on the Integrated Control Engine (ICE) board.
    - Doing the Signal Processing Unit (SPU) respiratory diagnostic
      This Signal Processing Unit (SPU) respiratory diagnostic verifies that the trigger signals (respiratory trigger), which are launched from the SPU in Integrated Control Engine (ICE), could be correctly captured by the sequencer module in ICE.
    - Doing the Signal Processing Unit (SPU) cardiac diagnostic
      The Signal Processing Unit (SPU) cardiac diagnostic verifies that the trigger signals (cardiac trigger), which are launched from SPU in Integrated Control Engine (ICE), could be correctly captured by the sequencer module in ICE.
  - Troubleshooting the dockable table
    Contains causes and solutions for common dockable table failures.
- Magnet Enclosure
- Image Quality

SIGNA™ Hero 3.0T Service Methods
5852800-8EN Revision 1.0
Object ID: 00000018WIA300ACF20GYZ
Topic ID: id_13106306 Version: 2.1
Date: Jul 13, 2021 6:19:14 PM

Doing the Signal Processing Unit (SPU) to Physiological Acquisition Controller (PAC) loopback diagnostic

Disclaimer

Depending on your service agreement, not all service tools, diagnostics, and utilities referenced in this document may be accessible. Contact your sales person for information on available service license packages.

Diagnostic path

Diagnostics > Hardware Location > Magnet Room > PAC Diagnostics Test

Figure 1. PAC diagnostics

Purpose

This test verifies that the ICE board can send data to the PAC module over the PAC's fiber optic cables.

Components tested

PAC Module
The SPU-PAC communication link

Requirements

None

Test sequence

Click Calculate Time to get an estimate of the time it will take to run the selected diagnostics.
Click Run to initiate test.
In this test, the SPU on the ICE board sends serial data to the PAC fiber optic cable. The PAC inverts this test data and sends it back. The SPU verifies that the correct data is returned.

Note: Do not change the Test Options settings from the default settings unless instructed to do so by a GE Healthcare engineer. There are very few circumstances when these settings need to be changed.

Results

Output values are judged pass or fail. In the event of failure, the details of the failure can be found in the GE System Log.

Although, in the case of errors you can click the 1st Error number to see the nature of the error, it is recommended that you view the GE System Log to view all the errors that were recorded.

If this test fails, perform the SPU to PAC IF DP to verify the Tx and Rx port on the ICE boards to communicate with PAC.

Perform the SPU > FPGA test to ensure the FPGA SPU to FPGA DP.

Verify that the PAC module has power.

Home
Troubleshooting
Patient Handling
Physiological Acquisition Controller (PAC) diagnostics (ICE, SPU, FPGA)
Diagnostic procedures related to the Physiological Acquisition Controller (PAC), which include: a PAC manual test, a PAC respiratory test, a PAC power-up test, the Signal Processing Unit (SPU) to PAC IF loopback test, the SPU to PAC loopback diagnostic, the SPU to Field Programmable Gate Array (FPGA) loopback test, the SPU respiratory test, and the SPU cardiac diagnostic.
Doing the Signal Processing Unit (SPU) to Physiological Acquisition Controller (PAC) loopback diagnostic
The Signal Processing Unit (SPU) to Physiological Acquisition Controller (PAC) loopback diagnostic verifies that the ICE board can send data to the PAC module over the PAC's fiber optic cables.