The FM/AM-1600S is a microprocessor controlled, digitally synthesized communication service monitor which combines the operations of many different test instruments into a single, compact unit. Functions the FM/AM-1600S is capable of performing include: RF Generator Duplex Spectrum Analyzer DMM Distortion Meter Audio Frequency Meter RF Power Meter Signal Strength Meter Phase Meter Tracking Generator Digital Radio Paging Encode and Decode Receiver AF Generator Oscilloscope Deviation (Peak) Meter SINAD Meter Frequency Error Meter Modulation Meter Bit Error Rate Meter Deviation (RMS) Meter Cable Fault Detector Analog Radio Paging Encode and Decode The FM/AM-1600S utilizes an alphanumeric keypad, dedicated function keys, multitask Soft Function Keys and a high-resolution color CRT to display, enter and edit functions and data. Testing with this instrument can be done remotely or manually. The FM/AM-1600S can perform tests from pre-programmed setups or formats determined at the time of the test. Microprocessor controlled memory allows storage and recall of parameters for each of the testing modes as well as storage and recall of Oscilloscope and Spectrum Analyzer traces for signal comparison. The FM/AM-1600S is capable of generating modulated or unmodulated carrier signals from 250 kHz to 999.9999 MHz (in 100 Hz steps). The output level is variable from -137 dBm to 0 dBm. Modulation types include AM, FM and PM. Modulation can also be applied from an external source. The RF Generator also functions as a tracking generator for swept measurements or as an offset generator in Duplex Mode. Metering functions available for this operation mode include SINAD, DMM, Distortion and Audio Frequency Level meters. The Oscilloscope and Spectrum Analyzer are also available for use on the RF Generator Operation Screen. 1-3 RECEIVER The FM/AM-1600S is capable of receiving modulated and unmodulated signals from 250 kHz to 999.9999 MHz (in 100 Hz steps). The FM/AM-1600S receives AM, FM, PM, and SSB modulated signals. Metering functions in the FM/AM-1600S available with the Receiver include RF Power, Modulation, Deviation, Distortion, Frequency Error, AF Frequency, Signal Strength and SINAD meters and counters. The Oscilloscope and Spectrum Analyzer are also available for use on the Receiver Operation Screen. The FM/AM-1600S Receiver is capable of executing user defined frequency scan operations as well as single frequency operations. The Receiver accesses "off the air" signals through the ANTENNA IN Connector or higher powered signals are accessed through the T/R Connector.