The Keysight (Agilent) 8647A is an economical synthesized RF signal generator designed for high-volume manufacturing lines of pagers, cordless telephones, two-way radios, and general receiver testing. It features an electronic attenuator with no moving parts for high repeatability, 300 storage registers, and 10 user-definable sequences to streamline semi-automated test procedures.
Specifications
Frequency
| Parameter | Value |
|---|---|
| Minimum Frequency | 250 kHz |
| Maximum Frequency | 1000 MHz |
| Frequency Resolution | 1 Hz |
Output
| Parameter | Value |
|---|---|
| Maximum Output Power | +10 dBm |
| Output Power Range | +10 to -136 dBm |
| Phase Noise | <-115 dBc/Hz @ 20 kHz offset (500 MHz carrier) |
Modulation
| Parameter | Value |
|---|---|
| Modulation | AM, FM |
| Sweep Modes | Frequency, Amplitude |
| External Modulation Input Level | 1 Vpeak (for specified deviation) |
| Residual AM | < 0.01% (AM off, 0.3 to 3 kHz BW, post-detection) |
General
| Parameter | Value |
|---|---|
| Reference Oscillator | 10 MHz (internal) |
| Interfaces | GPIB (IEEE-488) |
| Display | LCD |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 90 to 264 Vac, 47 to 440 Hz |
| Dimensions (W×H×D) | 325 mm × 133 mm × 422 mm |
| Weight | 7 kg |
| Shipping Weight | 11 kg (24 lbs) |
Frequency Specifications
| Parameter | Value |
|---|---|
| Frequency Accuracy | Same as timebase accuracy |
| Frequency Switching Speed | <120 ms |
| Internal Reference Frequency | 10 MHz |
| Internal Reference Aging Rate | <2 ppm/year |
| External Reference Input Frequency | 1, 2, 5, 10 MHz (±10 ppm) |
| External Reference Input Level | >0.15 Vrms |
| Reference Output Frequency | 10 MHz |
Amplitude and Output Power
| Parameter | Value |
|---|---|
| Output Impedance | 50 ohms |
| Maximum Reverse Power Protection (DC Voltage) | 50 Vdc |
| Maximum Reverse Power Protection (RF Power) | 50 W |
| Amplitude Resolution | 0.1 dB |
| Amplitude Accuracy | ±1.0 dB (levels > -127 dBm) |
| Attenuator Type | Electronic |
Spectral Purity
| Parameter | Value |
|---|---|
| SSB Phase Noise at 1 GHz | <-109 dBc/Hz (at 20 kHz offset) |
| Harmonics | <-30 dBc (outputs ≤ +4 dBm) |
| Non-harmonics Spurious | <-55 dBc (offsets > 50 kHz) |
| Residual FM | <20 Hz rms (0.3 to 3 kHz BW, carrier <500 MHz) |
| SSB Phase Noise at 500 MHz | <-115 dBc/Hz (@ 20 kHz offset) |
| Subharmonics | None (< 1000 MHz) |
Frequency Modulation (FM)
| Parameter | Value |
|---|---|
| Maximum FM Deviation (Carrier <249 MHz) | 100 kHz |
| Maximum FM Deviation (Carrier 249 to 501 MHz) | 50 kHz |
| Maximum FM Deviation (Carrier 501 to 1000 MHz) | 100 kHz |
| FM Resolution | 100 Hz (deviation 1 to 10 kHz); 1 kHz (deviation 10 to 100 kHz) |
| FM Accuracy | ±7.5% of setting + 200 Hz (1 kHz rate) |
| FM Distortion | <1% (1 kHz rate, max deviation) |
| FM External Input Impedance | 600 ohms |
| FM Coupling | AC |
Amplitude Modulation (AM)
| Parameter | Value |
|---|---|
| AM Depth Range | 0 to 100% (outputs ≤ +4 dBm) |
| AM Resolution | 0.1% |
| AM Accuracy | ±5% of setting ±1.5% (at 1 kHz rate, depth <90%) |
| AM Distortion | <2% (at 1 kHz rate, 30% depth) |
| AM External Input Impedance | 600 ohms |
| AM Coupling | AC |
Internal Modulation Source
| Parameter | Value |
|---|---|
| Internal Modulation Waveforms | Sine |
| Internal Modulation Frequencies | 400 Hz, 1000 Hz |
| Internal Modulation Frequency Accuracy | ±2% |
Sweep and List Modes
| Parameter | Value |
|---|---|
| Storage Registers | 300 registers |
| User-Definable Sequences | 10 sequences |
Connectivity and Interfaces
| Parameter | Value |
|---|---|
| RF Output Connector Type | Type-N female |
| External Modulation Input Connector | BNC female |
| External Reference Input Connector | BNC female |
| Internal Reference Output Connector | BNC female |
Remote Programming and Emulation
| Parameter | Value |
|---|---|
| Remote Programming Languages | SCPI |
Physical and Environmental
| Parameter | Value |
|---|---|
| Operating Temperature Range | 0 to 50 °C |
| Power Consumption (Maximum) | 170 VA |
Factory Options and Configurations
| Parameter | Value |
|---|---|
| High-Stability Timebase Option | Option 1E5 |
Amplitude
| Parameter | Value |
|---|---|
| Amplitude Flatness | < ±0.5 dB (at 0 dBm) |
Reference Oscillator
| Parameter | Value |
|---|---|
| Standard Timebase Aging Rate | < 2 ppm/year |
| Standard Timebase Temperature Stability | < ±10 ppm (0 °C to 50 °C) |
| Option 1E5 High Stability Timebase Aging Rate | < 1.5 x 10^-8/month |
| Option 1E5 High Stability Timebase Temperature Stability | < ±0.05 ppm (0 °C to 50 °C) |
Power Requirements
| Parameter | Value |
|---|---|
| AC Input Voltage | 90 to 264 VAC |
| AC Input Frequency | 48 to 440 Hz |
Environmental
| Parameter | Value |
|---|---|
| Storage Temperature Range | -40 °C to +71 °C |
| Operating Altitude | 4,600 m (15,000 ft) |
| Storage Altitude | 15,000 m (50,000 ft) |
| Operating Humidity | Up to 95% relative humidity at 40 °C |
| Acoustic Noise | < 30 dBA (typical) |
Interfaces
| Parameter | Value |
|---|---|
| GPIB Address Range | 0 to 30 |
Compliance
| Parameter | Value |
|---|---|
| EMC Compliance | CISPR 11/EN 55011 Class A, IEC 801-2/3/4 |
| Safety Compliance | IEC 1010-1, CSA C22.2 No. 1010.1 |
Frequency Modulation
| Parameter | Value |
|---|---|
| FM Rate (AC Coupled) | 10 Hz to 75 kHz (3 dB bandwidth) |
| FM Rate (DC Coupled) | DC to 75 kHz (3 dB bandwidth) |
Amplitude Modulation
| Parameter | Value |
|---|---|
| AM Rate (AC Coupled) | 10 Hz to 25 kHz (3 dB bandwidth) |
RF Output
| Parameter | Value |
|---|---|
| Reverse Power Protection Reset | Automatic or manual (front panel key or GPIB command) |
Options
| Parameter | Value |
|---|---|
| Option 001 | Rear panel RF output |
| Option 1EP | Pager Signaling (adds internal pager encoder) |
| Option 1CN | Handle Kit |
| Option 1CP | Rack Mount Kit with Handles |
Technology
Synthesized RF Signal Generator
Applications
Receiver testing, manufacturing of cordless telephones, pagers, and two-way radios, and general-purpose RF testing