The Keysight (Agilent HP) 8447D is a high-gain, low-noise preamplifier operating over a frequency range of 100 kHz to 1300 MHz. It is designed to enhance the sensitivity of spectrum analyzers, frequency counters, RF voltmeters, and other measurement receivers, while also boosting signal source outputs.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | None (analog RF only) |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 100 / 120 / 220 / 240 V AC (±10%), 48 - 440 Hz, 15 VA |
| Operating Temperature | 0 to 55 °C |
| Dimensions (W×H×D) | 216 mm × 130 mm × 285 mm |
| Weight | 1.56 kg |
RF Performance Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 100 kHz - 1300 MHz |
| Mean Gain | 26 dB ± 1.5 dB (at 20 °C) |
| Gain Flatness | ±1.5 dB (across full frequency range) |
| Noise Figure (Maximum) | < 8.5 dB |
| Output Power at 1 dB Compression (P1dB) | > +7 dBm |
| Output Power at 1 dB Compression (Typical) | +12.5 dBm |
| Reverse Isolation | > 40 dB |
| Third-Order Intercept Point (IP3) | +20 dBm (typical) |
| Harmonic Distortion | < -30 dB for +10 dBm output (typical) |
| Typical 3 dB Bandwidth | 50 kHz - 1.7 GHz |
RF Input and Output Impedance
| Parameter | Value |
|---|---|
| Input VSWR | < 2.0 (100 kHz - 1300 MHz) |
| Output VSWR | < 2.0 (100 kHz - 1300 MHz) |
| Input Impedance | 50 Ω (nominal) |
| Output Impedance | 50 Ω (nominal) |
| Maximum DC Input Voltage | ±10 V |
| RF Input Connector Type | BNC female (standard) / Type-N female (Option 010) |
| RF Output Connector Type | BNC female (standard) / Type-N female (Option 010) |
Power Requirements
| Parameter | Value |
|---|---|
| AC Input Voltage Range | 100 V / 120 V / 220 V / 240 V AC (±10%) |
| AC Line Frequency Range | 48 to 440 Hz |
| Power Consumption | 15 VA (approximately) |
| Power Indicator Type | Front-panel power indicator light |
| Line Voltage Selection | Manual slide switch on rear panel (115/230 VAC) |
Environmental Parameters
| Parameter | Value |
|---|---|
| Operating Temperature Range | 0 to 55 °C |
| Storage Temperature Range | -40 to 75 °C |
| Cooling Method | Convection cooling |
Physical Characteristics
| Parameter | Value |
|---|---|
| Chassis Width | 216 mm (8.5 in) |
| Chassis Height | 130 mm (5.1 in) |
| Chassis Depth | 285 mm (11.2 in) |
| Weight (Net) | 1.56 kg (3.4 lb) |
| Weight (Shipping) | 2.3 kg (5.0 lb) |
| Form Factor | Benchtop (half-rack width) |
Accessories and Calibration
| Parameter | Value |
|---|---|
| Rackmount Kit Options | Option 908 (Rackmount Kit for single unit) / Option 909 (Rackmount Kit for two units) |
| Hardware Configurations | Option 010 (Type-N RF connectors replacing BNC) |
RF Performance
| Parameter | Value |
|---|---|
| Number of Channels | 1 |
| Input Coupling | AC coupled |
| Output Coupling | AC coupled |
Hardware Options
| Parameter | Value |
|---|---|
| Option 010 RF Connectors | Type-N female |
Safety & Limits
| Parameter | Value |
|---|---|
| Maximum Peak RF Input Power | 100 mW (+20 dBm, pulse duration < 1 ms) |
Power
| Parameter | Value |
|---|---|
| Line Fuse Rating | 0.25 A slow-blow (100/120 V) or 0.125 A slow-blow (220/240 V) |
Hardware Configurations
| Parameter | Value |
|---|---|
| Option 011 RF Connectors | BNC female connectors on the rear panel |
Technology
Solid-state RF Preamplifier
Applications
RF signal amplification, measurement sensitivity enhancement