The Keysight 8657J signal generator adds Pi/4 DQPSK digital modulation capability to conventional AM, FM, and pulse modulation formats. The Keysight 8657J builds on the excellent performance of the Keysight 8657 signal generator by adding digital modulation capability. The Keysight 8657J tests radios for Japanese digital cordless telephone systems, called Personal Handiphone System (PHS).
100 kHz to 1030 MHz analog range
Standard AM and FM modulation
Pi/4 DQPSK modulation for PHS
Pulse modulation
<3.2% error vector magnitude
Digital RF frequency bands for PHS
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