Agilent/Keysight E4437B

The Agilent/Keysight E4437B is a digital RF signal generator from the ESG-DP series designed for research, development, manufacturing, and troubleshooting applications. It delivers high spectral purity and advanced digital modulation capabilities across a wide frequency range with flexible output power control. The instrument supports standard and custom digital modulation formats alongside versatile analog modulation techniques, making it suitable for complex signal generation tasks.

– Technical Specifications

• Frequency Range: 250 kHz to 4 GHz
• Frequency Resolution: 0.01 Hz, 10.0 mHz
• Output Power: +13 dBm down to -136 dBm (standard); Option UNB provides +17 dBm down to -136 dBm (≤1 GHz), +16 dBm down to -136 dBm (>1 to 3 GHz), +13 dBm down to -136 dBm (>3 to 4 GHz)
• RF Modulation Bandwidth: Up to 35 MHz
• Phase Noise: SSB <−134 dBc/Hz at 20 kHz offset (1 GHz carrier); <−138 dBc/Hz typical
• Harmonics: <−30 dBc at ≤+4 dBm output
• Non-Harmonics: 3 kHz offset), 10 kHz offset) from 250 kHz to 250 MHz
• Output Impedance: 50 Ω
• Reverse Power Protection: 1 watt nominal

– Key Features

• Modulation support: AM, FM, phase modulation, pulse modulation, wideband FM, and custom digital modulation (>15 FSK, MSK, PSK, QAM variations) plus I/Q
• Optional dual arbitrary waveform generator: 40 MHz sample rate, 14-bit I/Q resolution, 1 Msample (4 MB) playback and storage memory
• Optional real-time I/Q baseband generator
• GPIB and RS-232 connectivity
• Firmware personalities for 3GPP W-CDMA, cdma2000, IS-95-A, GSM/EDGE, 1xEV-DO, and Bluetooth

– Optional Configurations

• Option 1E5: High stability timebase
• Option UN5: Multichannel IS-95 CDMA personality
• Option UN7: Internal bit-error-rate analyzer
• Option UN8: Real-time I/Q baseband generator with TDMA standards and 1 Mbit RAM
• Option UND: Dual arbitrary waveform generator
• Rackmount and connector relocation options available