Keysight (Agilent)
Keysight (Agilent) 85650A
Quasi-Peak Adapter
100 Hz to 2.9 GHz Frequency Range
Quasiпeak Detector / EMI Quasi-peak Adapter Interface Type
Keysight 8560 Series Spectrum Analyzers Compatible Instruments
200 Hz, 9 kHz, 120 kHz (CISPR standard bandwidths) Resolution Bandwidth
Quasi-peak and Average Detectors Detector Type

| Attribute | Value |
|---|---|
| Frequency Range | 100 Hz to 2.9 GHz |
| Interface Type | Quasiпeak Detector / EMI Quasi-peak Adapter |
| Compatible Instruments | Keysight 8560 Series Spectrum Analyzers |
| Resolution Bandwidth | 200 Hz, 9 kHz, 120 kHz (CISPR standard bandwidths) |
| Detector Type | Quasi-peak and Average Detectors |
| Compliance Standards | CISPR 16-1, MIL-STD-461 |
| Input Connector | Type-N Female |
| Power Requirements | Powered via host spectrum analyzer (no external power required) |
| Operating Temperature | 0°C to 55°C |
| Dimensions (W x H x D) | Plug-in module form factor compatible with 8560 Series mainframe |
Keysight (Agilent) 85650A Options:
- 11500A - 11500A - Six foot RG-214U Cable with Type-N Connector
- 11500F - 11500F - 150 cm Cable (APC 3.5 Male Connectors)
- 11940A - 11940A - Close Field Probe 30 MHz to 1 GHz
- 11941A - 11941A - Close Field Probe 9 KHz to 30 MHz
- 11945A - 11945A - Close Field Probe Set
- 11947A - 11947A - Transient Limiter
- 11955A - 11955A - Biconical Antenna
- 11956A - 11956A - Log Periodic Antenna
- 11960A - 11960A - EMC Preselector
- 11961A - 11961A - EMI Measurement Software
- 11966A - 11966A - Active Magnetic Loop Antenna
- 11966A - K12 - Passive Loop Set
- 11966A - K24 - Biconical Antenna 20 MHz to 300 MHz (2000 Watts)
- 11966A - K30 - Passive Rod Antenna
- 11966A - K38 - Biconical Antenna 30 MHz to 300 MHz (300 Watts)
- 11966A - K40 - Royce Field Site Source
- 11966A - K47 - Five Meter Cable (APC 3.5 Male Connector)
- 11966A - K48 - Ten Meter Cable (APC 3.5 Male Connector)
- 11966B - 11966B - Active Monopole Antenna
- 11966C - 11966C - Biconical Antenna 30 MHz to 300 MHz
- 11966D - 11966D - Log-Periodic Antenna 200 MHz to 1 GHz
- 11966E - 11966E - Double-Ridged Waveguide Horn Antenna 1 to 18 GHz
- 11966F - 11966F - Conical Log Spiral Antenna 200 MHz to 1 GHz
- 11966G - 11966G - Conical Log Spiral Antenna 1 GHz to 10 GHz
- 11966H - 11966H - Dipole Antenna Set 28 MHz to 1000 MHz
- 11966I - 11966I - Horn Antenna 200 MHz to 2 GHz
- 11966J - 11966J - Horn Antenna 18 GHz to 40 GHz
- 11966K - 11966K - Magnetic Field Pickup Coil 20 Hz to 50 kHz
- 11966L - 11966L - Coaxial Cable 10 Meter Type-N
- 11966M - 11966M - Coaxial Cable 10 Meter BNC
- 11966N - 11966N - Log Periodic Antenna 200 MHz to 5 GHz
- 11966P - 11966P - Broadband Antenna
- 11967A - K05 - Absorbing Clamp
- 11967A - K06 - Cavity Rejection Network
- 11967A - K23 - Bridged-T Rejection Networks
- 11967A - 11967A - Current Probe 15 kHz to 50 MHz
- 11967B - 11967B - Current Probe 20 Hz to 2 MHz
- 11967D - 11967D - 10 Amp Line Impedance Stabilization Network
- 11967E - 11967E - 25 Amp Line Impedance Stabilization Network
- 11968A - K07 - Shielded Room Kit
- 11968B - 11968B - Manual Antenna Positioning Mast
- 11968C - 11968C - Antenna Tripod
- 11968E - 11968E - Manual Equipment Test Turntable
- 8447F - H64 - Dual Preamplifier 0.1 to 1300 MHz
- 8449B - 8449B - Microwave Preamplifier 1 GHz to 26.5 GHz
- 85685A - 85685A - RF Preselector
- 85876A - 85876A - Commercial Radiated EMI Software
- 85878A - 85878A - EMIReport Generator
- 85650A - 0160-6683 - 10 µF Capacitor
- 85650A - 8120-1840 - 122 Centimeter Coaxial Cable
- 85650A - 11729-60014 - Low Noise Preamplifier
| Model | 85650A |
|---|
The Keysight (Agilent) 85650A quasi-peak adapter enhances HP 8566B, 8567A, 8568B spectrum analyzers and the 85685A RF preselector, completing an EMI test system with selectable bandwidth filters (200 Hz, 9 kHz, 120 kHz) and peak, quasi-peak, or average detection modes.
It features a bypass mode, CISPR bandwidths, built-in speaker, headphone jack, and nine auxiliary SPDT switches controlled via GPIB except volume and line.
Testwall can supply the used Keysight (Agilent) 85650A, fully tested. With expert support and global delivery, Testwall ensures high-performance instrumentation with unmatched reliability and service quality. Please contact us directly if you need calibration or repair of the Keysight (Agilent) 85650A.





