The Keysight (formerly Agilent/HP) 8648D is an economical 4 GHz synthesized RF signal generator tailored for semi-automated receiver testing and general-purpose RF applications. Offering a wide frequency range of 9 kHz to 4 GHz, it provides superior level accuracy, an output power range of -136 dBm to +13 dBm, and standard AM, FM, and Phase modulation. Designed to optimize manufacturing throughput for products like cordless phones, pagers, and two-way radios, the 8648D features 300 storage registers, 10 user-definable sequences, and optional high-power and pulse modulation capabilities in a dependable, easy-to-use platform.
Specifications
Frequency
| Parameter | Value |
|---|---|
| Minimum Frequency | 9 kHz |
| Maximum Frequency | 4 GHz |
| Frequency Resolution | 0.001 Hz |
Output
| Parameter | Value |
|---|---|
| Maximum Output Power | +13 dBm |
| Output Power Range | -136 dBm to +13 dBm |
Modulation
| Parameter | Value |
|---|---|
| Modulation | AM, FM, Phase |
| Internal Modulation Source | 400 Hz and 1 kHz (standard); 10 Hz to 20 kHz (Option 1E2) |
General
| Parameter | Value |
|---|---|
| Reference Oscillator | 10 MHz |
| Interfaces | GPIB |
| Display | LCD |
| Calibration Interval | 2 years |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 90 to 264 Vac, 48 to 440 Hz |
| Dimensions (W×H×D) | 330 × 165 × 368 |
| Weight | 8.5 |
Frequency Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 9 kHz to 4 GHz |
Amplitude and Output Specifications
| Parameter | Value |
|---|---|
| Output Power Resolution | 0.1 dB |
| Output Impedance | 50 Ω |
Spectral Purity
| Parameter | Value |
|---|---|
| Harmonics | <-30 dBc |
Modulation Specifications
| Parameter | Value |
|---|---|
| Modulation Formats | AM, FM, Phase |
Connectivity and Interfaces
| Parameter | Value |
|---|---|
| RF Output Connector Type | Type-N (Female) |
| Remote Control Interface | GPIB (IEEE-488) |
Features
| Parameter | Value |
|---|---|
| Storage Registers | 300 |
| User-definable Sequences | 10 |
Reference Oscillator
| Parameter | Value |
|---|---|
| Timebase Aging Rate | ±2 ppm/year (standard); < ±0.1 ppm/year (Option 1E5) |
Protection
| Parameter | Value |
|---|---|
| Reverse Power Protection | 50 W (≤ 2000 MHz), 25 W (> 2000 MHz) |
Environmental
| Parameter | Value |
|---|---|
| Operating Temperature | 0 °C to 50 °C |
| Storage Temperature | -40 °C to +71 °C |
Power
| Parameter | Value |
|---|---|
| Power Consumption | 170 VA maximum |
Technology
RF Synthesized
Applications
Receiver Test, Manufacturing, General Purpose RF
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