The Site Master S331B, with a frequency range of 5 to 33000 MHz, is a hand held SWR/RL (standing wave ratio/return loss), and Distance-To- Fault (DTF) measurement instrument that includes a built-in synthesized signal source. All models include a keypad to enter data and a liquid crystal display (LCD) to provide graphic indications of SWR or RL over the selected frequency range and selected distance. The Site Master is capable of up to 2.5 hours of continuous operation from a fully charged field-replaceable battery and can be operated from a 12.5 dc source. Built-in energy conservation features can be used to extend battery life over an eight-hour work day.

The Site Master is designed for measuring SWR, return loss, or cable insertion loss and locating faulty RF components in antenna systems. Power monitoring is available as an option. The displayed trace can be scaled or enhanced with frequency markers or a limit line. A menu option provides for an audible “beep” when the limit value is exceeded. To permit use in low-light environments, the LCD can be back lit using a front panel key.

Specifications:

Frequency range	5 to 3300 MHz
Frequency accuracy (CW mode)	75 ppm
Frequency resolution	10 kHz
Display data points	Selectable: 130,259,517
Immunity to interfering RF signals	up to +10 dBm
Return loss	Range: 0 to 54 dB; Resolution: 0.01 dB
SWR	Range: 1 to 65 Resolution: 0.01
Cable loss	Range: 0 to 20 dB Resolution: 0.01 dB
Distance-to-fault	Vertical range Return loss: 0 to 54 dB SWR: 1 to 65 Horizontal range (meter): 0 to (dp x resolution), where dp = 128, 256 or 512 Horizontal resolution, rectangular windowing resolution (meter): (1 .5 x 10⁸)(Vp)/delta frequency
Trace memory	Up to 200
Instrument configuration	10
Test port connector	Precision N female
Maximum input	RF OUT test port: +22 dBm RF IN test port: +10 dBm RF IN Spectrum Analyzer port : +20 dBm safe input, +27 dBm damage level
Temperature	Operating: 0°C to +50 °C Storage: -20 °C to +75 °C

Anritsu Site Master S331B Cable Antenna Analyzer SiteMaster 331