The Keysight (Agilent) 909A is a general-purpose, low-reflection coaxial termination designed to terminate 50-ohm transmission lines in their characteristic impedance over a wide frequency range from DC to 18 GHz. This precision load is available with APC-7, Type-N male, or Type-N female connectors, making it suitable for both broadband and narrowband measurements where low standing wave ratio (SWR) is critical.
Specifications
Physical
| Parameter | Value |
|---|---|
| Dimensions (W×H×D) | 21 mm (Diameter) x 51 mm (Length for APC-7) / 57 mm (Length for Type-N) |
| Weight | 0.14 kg |
RF & Electrical Performance
| Parameter | Value |
|---|---|
| Frequency Range | DC to 18 GHz |
| Nominal Impedance | 50 Ω |
| Average Power Rating | 2 W |
| Peak Power Rating | 300 W |
| Peak Power Pulse Width | 10 µs |
| Peak Power Duty Cycle | 0.001 |
| Maximum VSWR (DC to 4 GHz, APC-7) | 1.05 |
| Maximum VSWR (DC to 4 GHz, Type-N) | 1.06 |
| Maximum VSWR (4 to 12.4 GHz, APC-7) | 1.10 |
| Maximum VSWR (4 to 12.4 GHz, Type-N) | 1.11 |
| Maximum VSWR (12.4 to 18 GHz, APC-7) | 1.25 |
| Maximum VSWR (12.4 to 18 GHz, Type-N) | 1.30 |
Mechanical & Connector Specifications
| Parameter | Value |
|---|---|
| Connector Type Options | APC-7, Type-N male, Type-N female |
| Standard Connector | APC-7 |
Ordering & Configuration Options
| Parameter | Value |
|---|---|
| Option 012 Connector | Type-N male |
| Option 013 Connector | Type-N female |
Power Specifications
| Parameter | Value |
|---|---|
| Power Derating | Linearly from 2 W at 25 °C to 1 W at 125 °C |
Technology
RF/Microwave Coaxial Termination
Applications
Broadband and narrowband RF/microwave measurements, 50-ohm system impedance termination