The 2957D AMPS Cellular Test System (Analog & Digital) is designed specifically for testing AMPS in North America. It offers Single Word Paging, Directed Retry, New Access Channels and Overload Class information. The instrument offers a high performance, cost effective package ideal for service shops, distributors, manufacturers and system providers. Combined Base Station Simulation and Mobile Radio Test Set in one Portable Package GO/NO-GO, Full Auto and Manual Test Modes for Rapid Radio Testing and Fault Location Non-Volatile Storage and Recall of System Set-ups Detailed Data Displays for Tracking Protocol Errors Serial, GPIB, Parallel Interfaces for Control and Results Printing Disk Interface for User Program Storage User System Definition for System Variants Frequency Range (Digital Transmitter Tests): 824.010MHz to 848.970MHz and 869.010MHz to 893.970MHz 440.010MHz to 449.970MHz in 30kHz steps ?1kHz Frequency Range (Digital Receiver Tests): 824.010MHz to 848.970MHz and 869.010MHz to 893.970MHz 485.010MHz to 494.970MHz in 30kHz steps ?1kHz