HP 8657J Pi/4 DQPSK Signal Generator for PHS

Product Summary

The HP 8657J signal generator adds Pi/4 DQPSK digital modulation capability to conventional AM, FM, and pulse modulation formats. The HP 8657J builds on the excellent performance of the HP 8657 signal generator by adding digital modulation capability. The HP 8657J tests radios for Japanese digital cordless telephone systems, called Personal Handiphone System (PHS).

Product Features

• 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

Product Specifications

Analog Modulation Mode
In the analog modulation mode, specifications are the same as the HP 8657B
 up to 1030 MHz. Please refer to the HP 8657B specifications for complete analog mode performance.

Pi/4 DQPSK Modulation Mode:
	Frequency Range:
		1800 to 2000 MHz
Switching Speed
	< 50 ms within 100 Hz of final frequency
Modulation:
	Pi/4 DQPSK
Modulation data clock frequency range:
	Symbol clock:
		192 kHz +/- 10 kHz
	Bit clock:
		384 kHz +/- 20 kHz
Pre-modulation filter:
	square-root raised cosine
Filter shape factor:
	rho = 0.50
Error vector magnitude:(15 degrees to 35 degrees C):
	< 3.2%, 1800 to 2000 MHz, < +3 dBm
I/Q origin offset:
	(15 degrees  to 35 degrees C): -35 dB, RF output only

Product Ordering Information

HP 8657J	Pi/4 DQPSK Signal Generator for PHS
   Opt 001	High Stability Reference

   Opt 907	Front Handle Kit
   Opt 913	Rack Mount Flange Kit (5062-4073)

   Opt OBX	Add Service Manual (does not come standard)(08657-90007, 08657-91011)

   Opt W30	Three-Year Repair Service
   Opt W32	Three-Year Calibration Service

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