190-01553-01 Rev. GGarmin GTR 200/200B Pilot’s Guide18GTR 200/200BICS CONFIGURATIONThe GTR 200/200B features a stereo integrated Intercom System (ICS). TheGTR 200/200B may also be installed and configured for Keyed ICS operations.Keyed ICS is typically used in an extremely noisy environments, such as anopen cockpit. The ICS is enabled or disabled in Configuration Mode. See theGTR 200/200B Installation Manual for installation and configuration details.Setting the ICS Volume:1) Press the MENU key.2) Turn the LARGE Knob to highlight the ICS VOL field.3) Turn the SMALL Knob clockwise to increase, or counter clockwise todecrease volume.Setting the ICS Squelch:1) Press the MENU key.2) Turn the LARGE Knob to highlight the ICS SQ field.3) Turn the SMALL Knob clockwise to increase, or counter clockwise todecrease squelch. Turn the SMALL Knob one click counter clockwisepast 0% to enable ICS auto squelch.NOTE: When Squelch is set to 0%, squelch is always open and when set to100% squelch is always closed.Enable/disable Pilot Isolation:Press the Pilot Isolation Softkey if configured. Pilot Isolation modeis only available when the Pilot Isolation Softkey is configured.