Product Description:
Agilent 85685A RF Preselector, 20Hz to 2GHz, Spectrum Analyzer
Data sheet (PDF)
The Agilent 85685A spectrum analyzer is a wide band, very sensitive receiver. It works on the principle of "super-heterodyne receiver" to convert higher frequencies (normally ranging up to several 10s of GHz) to measurable quantities. The received frequency spectrum is slowly swept through a range of pre-selected frequencies, converting the selected frequency to a measurable DC level (usually logarithmic scale), and displaying the same on the CRT of the Agilent 85685A. The CRT displays received signal strength (y-axis) against frequency ( x-axis).
Some applications for Agilent 85685A Spectrum Analyzers include Site Monitoring: Verify that the frequency and signal strength of your transmitter is accurate. Interference: Before a system is installed you use a Agilent 85685A spectrum analyzer to verify that the frequencies (you plan to use) are not occupied or if the presence of a very strong signal will interfere with your new setup. Interference can be created by a number of different situations. Other tests that utilize the Agilent 85685A spectrum analyzer features include antenna isolation, co-channel interference, adjacent channel power, occupied bandwidth, intermodulation, microwave or satellite antenna alignment, and characterization of components.
Ave. Pwr: +30dBm (1W)
SWR: <1.5:1
Attn Range: 0-50dB
Preamplifier Gain: 20dB
Output Line Ampl: -40 - -60dBm
Performance Characteristics of the 85685A
| Form Factor |
Benchtop |
| Input Impedance |
50 Ohm |
| Minimum Frequency |
20 Hz |
| Maximum Frequency |
2 GHz |
| Zero Span |
No |
| Maximum DC Input |
0 V |
| Connector type (main signal) |
BNC(f) |
| 2nd IF Input Connector Type |
Type-N(f) |
| Probe Power |
No |
| Noise Source Driver |
No |
Programmability/Connectivity of the 85685A
| User Interface |
Proprietary
|
| Ports to Peripheral Devices |
HPIB
|
85685A Compliance
| CE Compliance |
Compliant
|
| UL Compliance |
Not compliant
|
85685A Power Requirements
| Input Power |
Universal (Auto Sense and Switch)
|
85685A Physical Dimensions
- Width: (N/A)
- Height: 133 mm(5.23 in)
- Length: 508 mm(19.99 in)
- Weight: 19 kg(41.88 lb)