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Chapter 5. SERIAL INTERFACE OPERATION
To achieve optimal performance and to access the most current remote control commands and queries, make sure to
operate the LPOD with its latest available firmware.
5.1 Overview
Serial-based remote management of Comtech EF Data's LPOD family of Outdoor Amplifiers / Block Up Converters (BUCs) is
available using the 'J6 | COM1' port. This chapter summarizes key parameters and procedures and their associated remote
commands and queries, and provides detailed instructions for use of the optional serial remote control commands and queries
interface.
5.2 Key Operational Parameters / Common Commands and Queries
5.2.1 RF Input Level
The required RF input level to reach the full rated output power of the SSPA is determined by the individual amplifier temperature
compensated gain and specified power rating. For example, if the test data of an SSPA rated for 250W (54 dBm) indicated a
temperature compensated gain of 75 dB, then a signal of 54 dBm – 75 dB = -21 dBm would yield the approximate rated output
power. Increasing input power beyond this level would result in an output signal with increasingly higher levels of distortion. When
you use LPOD attenuation control, the LPOD may accommodate a higher-level input signal level. The maximum input level should
never exceed 15 dBm, or permanent damage to the unit may occur.
5–1
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