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The ZM30 is an automated micro-controlled SWR antenna analyzer with a 8 bit micro-controller with a precision low power DDS signal generator. It also includes a self-calibrating reflectometer and displays SWR. The unit can also be used as a stable low power transmitter for remote antenna tests.
 

• Freq (1- 30) Mhz.
• SWR
• Impedance : approx. 5 to 600 ohms
• Reactance
• inductors and capacitors
• transmission lines
• stubs
• Q and resonant frequency
• Battery operated 
• serial port for field upgradeable software
• Stable TX for remote ant tests etc.
• Source Impedance: 50-Ohms
• Stability: +/- 50 ppm
• Spectral Purity: Harmonics down >-35 dB beyond 30 MHz
• Step Size: User configurable increments of 10 Hz, 100 Hz, 1 kHz, 10 kHz, and 100 kHz
• 2 Volts p-p (typical)
• External: 9-to-16.0 Volts DC
• Internal: Eight AA-cells, alkaline or NiMH
• Current Requirements: 200 ma (typical)
• External Power: 2.1mm coaxial power plug (center pin positive)
• RF Out: BNC
• Serial Port: RS232 (DB9F)