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Diagnostics
Switcher status menus and error conditions, installed options, calibration, diagnostics, and logs.
Control Panel Diagnostics
Panel Communications Hub Tests
To Perform an LVDS Test
The Low Voltage Differential Signalling (LVDS) test allows you to test the various communications between the Panel Communications Hub (PCH) and all the Panel Module Controllers (PMC) installed on the switcher. This test includes both internal and external modules.

Diagnostics
Switcher status menus and error conditions, installed options, calibration, diagnostics, and logs.
- Status
- Options
- Calibration
- Control Panel Diagnostics
  - Installed Control Panel Boards
  - Module Tests
  - Acuity® Control Panel Power Supply Failure
  - Panel Communications Hub Tests
    - To Perform a PCH Tx/Rx Test (Acuity® Only)
      The PCH Tx/Rx test allows you to test the various serial communications ports on the control panel. This test helps to diagnose communication problems with external devices that you may be having on a particular serial communications port on the control panel.
    - To Perform an LVDS Test
      The Low Voltage Differential Signalling (LVDS) test allows you to test the various communications between the Panel Communications Hub (PCH) and all the Panel Module Controllers (PMC) installed on the switcher. This test includes both internal and external modules.
    - To Perform a Tally Test (Acuity® Only)
      The tally test allows you to test the standard parallel tally system of the control panel. A Tally Test Box is required to ensure that the tally relays are operating properly. The number of tallies you have available to test depends on whether you have the Extended Tallies option installed.
    - To Perform a PCI Bridge Test
      The Peripheral Component Interconnect (PCI) Bridge test allows you to test the PCI bridge that is used to pass information between the control panel CPU and the PCH.
  - Touchscreen Tests
- Frame Diagnostics
- Port Monitoring and Logs

To Perform an LVDS Test

The Low Voltage Differential Signalling (LVDS) test allows you to test the various communications between the Panel Communications Hub (PCH) and all the Panel Module Controllers (PMC) installed on the switcher. This test includes both internal and external modules.

Note: Some external devices contain multiple modules and will show up as more modules than devices connected to a link.

Note: The TouchDrive panels do not support external LVDS links.

Press HOME > More > Diagnostics > Panel Diagnostics > PCH Test > LVDS Test.
Press LVDS Links to select whether you want to test the link to an internal panel module (Intern), or an external panel module (Extern).

Tip: If you want to test an LVDS link without connecting a module to it, you must connect a loopback adapter to the port and set Use Dongle to Yes.
Press Run Test.

The switcher tests the integrity of the communications between the PCH and each of the PMCs connected on a link.