Voltage Standing Wave Ratio Meter

The voltage Standing Wave Ratio Meter is a high gain, voltage amplifier tuned at the center frequency of 1 KHz It is used for VSWR, attenuation and total mismatch on the line.

Specifications:

• Model: VS-116
• Sensitivity: 0 (2uV at a 200-ohm input impedance for full-scale deflection)
• Noise level: At least 5 dB below full scale at rated sensitivity and maximum bandwidth with input terminated in 100 ohms and 500 ohms for crystal low and high impedances respectively
• Calibration: Square law, meter indicates SWR in dB
• Range: 70 dB, input attenuator provides 60 dB in 10 dB steps, accuracy ± 0.2dB per 10 dB stepsMaximum cumulative error ± 0.5 dB
• Scale Selector: Normal, Expand -5dB
• Meter Scale: SWR1-4, SWR3-10, Expand1-1.3dB0-10, expand dB0-2
• Gain control: Adjust the reference level, variable range 0-10dB approx
• Input: "Bolo" bias provided for 4.3mA low current bolo meters "Crystal" 200 ohms for low impedance crystal rectifier and 200K ohms high impedance
• Crystal: Rectifier as null detector
• Recorder: Socket provided for recording having 1 V for full-scale deflection, internal resistance of 1000 ohms or less
• A/C Output: BNC connector for amplified output
• Input Connector: BNC(F)
• Frequency: 1000Hz ± 10%
• Power: 230 volts A C ± 10%, 50Hz mains supply