B Using the transmitter display
B.1 Components of the transmitter interface
The transmitter interface includes the status LED, the display (LCD panel), and two optical switches.
B.2 Use the optical switches
Use the optical switches on the transmitter interface to control the transmitter display. The transmitter has
two optical switches: Scroll and Select.
Procedure
To activate an optical switch, block the light by holding your thumb or finger in front of the opening.
Tip
You can activate the optical switch through the lens. Do not remove the transmitter housing cover.
The optical switch indicator lights up when the transmitter senses that an optical switch has been activated.
Table B-1: Optical switch indicator and optical switch states
Optical switch indicator State of optical switches
Solid red One optical switch is activated.
Flashing red Both optical switches are activated.
B.3 Access and use the display menu system
The display menu system is used to perform various configuration, administrative, and maintenance tasks.
Prerequisites
To access the display menu system, operator access to either the Off-Line menu or the Alert menu must be
enabled. To access the complete menu system, operator access must be enabled for both the Off-Line menu
and the Alert menu.
Tip
The display menu system does not provide complete configuration, administrative, or maintenance
functions. For complete transmitter management, you must use another communications tool.
Procedure
1. At the transmitter display, activate the Scroll and Select optical switches simultaneously until the
display changes.
You will enter the Off-Line menu at any of several locations, depending on several factors.
• If an alert is active and access to the Alert menu is enabled, you will see SEE ALARM.
• If no alert is active, you will see OFF-LINE MAINT.
Configuration and Use Manual Using the transmitter display
MMI-20020954 March 2021
Configuration and Use Manual 149
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