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Agilent / HP / Keysight 8644B

8644B High-Performance Signal Generator, 1 GHz or 2 GHz

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Description

The Agilent 8644B signal generator represents the highest overall performance in Agilent's line of 1 GHz and 2 GHz signal generators. This generator has very low SSB phase noise (-136 dBc/Hz) and spurious (-105 dBc).

Instead of mechanical relays, the Agilent 8644B uses solid state components accurate to within 1.0 dB for setting levels. An advanced internal modulation synthesizer provides coverage to 400 kHz and two-tone capability with the selection of sine, square, triangle, sawtooth, and white Gaussian noise waveforms.

Key Points

-136 dBc/Hz SSB phase noise at 20 kHz offset at 1 GHz

< -105 dBc nonharmonic spurious up to 1 GHz allows spurious rejection tests to be fully automated with confidence

±1.0 dB output level accuracy down to -127 dBm

Internal modulation synthesizer with coverage up to 400 kHz and two-tone capability

Specifications

Frequency:
Range: 0.252 to 1030 MHz
Resolution: 0.01 Hz
Switching speed (typical): < 350 ms

Spectral purity:
Harmonics: < –25 dBc, output = +10 dBm
SSB phase noise (dBc/Hz):
1030 to 2060 MHz: –130 (Option 8644B-002)
515 to 1030 MHz: –136 (–142 typical)
257.5 to 515 MHz: –142
128.5 to 257.5 MHz: –145
0.25 to 128.5 MHz: –145

Nonharmonics:
< –105 dBc, > 10 kHz offset,0.252 to 1030 MHz
< –100 dBc, > 10 kHz offset,1030 to 2060 MHz

Output level:
Range: +16 to –137 dBm,+13 dBm (8644B-002)
Resolution: 0.01 Hz

Absolute accuracy:
±1 dB, output = –127 dBm
±3 dB, output < –127 dBm

Frequency sweep:
Digital sweep: Digitally stepped sweep over entire frequency range. Linear/log selection. 0.5 to 1000 sec sweeps.
Markers/Z axis output: Three markers available /Z axis output nominally +5 V/X axis output nominally 0 to 10 V.
Phase continuous sweep: 40 MHz of span available at maximum carrier frequency. Twenty ms to ten sec sweep times.

General:
Power requirements: ±10% of 100 V, 120 V, 220 V or 240 V; 48 to 440 Hz; 500 VA except 8644B 400 VA.
Operating temperature: 0 to 55 °C
Calibration interval: Recommended three years (MTBC).
Weight: 8644B; 30 kg (67 lbs). 8664A/8665B; 35 kg (78 lbs)
Dimensions: 177H x 426W x 601D mm (7 x 16.8 x 23.7 in.). Option 010 adds 35 mm (1.4 in.) to depth.