RF Measurement

My current RF spectrum analyzer/scalar network analyzer is an Agilent (Keysight) E7495A Base Station Test Set. It has the following specifications:

• Frequency Accuracy: < +/- 1 ppm after 15 minute warmup
• Frequency Accuracy with GPS Lock: < +/- 30 ppb after 15 minutes
• Dimensions: 295H x 368W x 135D mm
• Weight: 9.1 kg (20 lbs)
• Power Supply: +9 - 25 VDC, 55W
• Battery: 10.8 V, 6.0 AH (NI2040AG) Lithium Ion, ~1.5 hour battery life
• I/O: LAN 10 Base T, PCMCIA Card Slot, Compact Flash (Type 1/2)
• RF I/O:
  • Port 1/2 Max Input Level: +20 dBm (+30 dBm Damage Level)
  • Port 2 (RF In): 50 Ohm N
  • Port 1 (RF Out): 50 Ohm N
  • Frequency Reference: 50 Ohm BNC, -10 - +10 dBm level
  • GPS Antenna: SMA, +5V/50mA DC Bias
• Operating Temperature Range: -10 - +50 C (-30 - +70 C Storage)

• Spectrum Analyzer Frequency Range: 10 MHz - 2500 MHz (Extended range down to 500 kHz)
  • Dynamic Range: -150 - +10 dBm
  • RBW: 10 Hz - 1 MHz (1 Hz resolution)
  • Span: 1 kHz - Full Span
  • Update Rate:
    • Full Span: 5.1 s
    • 60 MHz: 400 ms
    • 1 MHz (100 Hz RBW): 1.2 s
  • Phase Noise: <= 85 dBc at 30 kHz offset
  • Spurs: < -115 dBm
  • DANL: -150 dBm at 30 Hz RBW, 375 - 1500 MHz

• Antenna Analyzer Frequency Range: 375 MHz - 2500 MHz
  • Frequency Resolution: < 500 Hz
  • Interference Immunity: + 20 dBm
  • Update Rate:
    • Full Span: < 17 ms/point
    • 60 MHz Span: < 7 ms/point
  • Return Loss Range: > 30 dB (< 1.07 VSWR)
  • Return Loss Resolution: 0.1 dB
  • Return Loss Display Range: -5 - +150 dB
  • Distance to Fault: 1 - 300 m (~1 % measurement distance resolution)
  • Insertion Loss Range: > 100 dB
  • Insertion Loss Accuracy: +/- 1 dB (60 dB range)
  • Insertion Loss Resolution: 0.1 dB

Hacking/Modifications

The system runs Linux on an ARM CPU. A root account is available (user: root, pass: wh1skers) over Telnet. More hacking information can be found here: http://www.eevblog.com/forum/testgear/agilent-e7495-linux-root-account/