The Site Master is a hand held SWR/RL (standing wave ratio/return loss) and Distance-To-Fault measurement instrument that includes a built-in synthesized signal source. It uses a keypad to enter data and a liquid crystal display (LCD) to provide a graphical indication of SWR or RL over the selected frequency range. The Site Master S111 and S331 have a built-in distance-to-fault capability. The Site Master S110 and S330, as well as models S111 and S331, allow measurement data to be converted to Fault Location via the companion Soft ware Tools program. The Site Master is capable of up to two hours of continuous operation from a fully charged internal battery. It can also be operated from a 12.5 dc source (which will also simultaneously charge the battery). 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. The displayed trace can be scaled and/or enhanced with settable frequency markers and/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.
A PC based software program (called Software Tools) provides an online database record for storing measurement data. Site Master Software Tools can also convert the Site Master display to a Microsoft Windows 3.x graphic. Measurements stored in the Site Master internal memory are down-loaded to the PC using the included serial cable. This null-modem serial cable connects between the Serial Interface connector on the Site Master and a Com Port on a DOS/Windows-based PC. Once stored, the graphic trace can then be displayed, scaled, and/or enhanced with markers and limit lines. Historical graphs can be overlaid with current data by using the PC’s mouse in “drag-n-drop” fashion. The underlying data can be extracted and used in spreadsheets or for other analytical tasks.
The Software Tools program also performs DTF (Distance To Fault) or Fault Location by clicking on the appropriate icon.
SiteMaster S110 Specifications
Frequency Range: 600 to 1200 MHz
Frequency Accuracy: (RF Source Mode) 75 parts per million
Frequency Resolution: 100 kHz
Measurement Range VSWR: 1.00 to 65.00
Return Loss Resolution: 0.1 dB
Rent Anritsu S110
Fault Location Resolution, nominal: 0.8% of maximum range
Dynamic Range 54 dB
Directivity (corrected) 35 dB (Standard Calibration); 42 dB (Precision Calibration)
Test Port, Type N: 50 Ohms
Max. Power output, nominal: +9 dBm
**Immunity to Interfering signals up to the level of: +10 dBm
Maximum Input (Damage Level) +22 dBm
Measurement Accuracy: Measurement accuracy depends on calibration components. Standard calibration components have a directivity of 35 dB. Precision calibration components have a directivity of 42 dB.
Storage: –20° C to 75° C
Operation: 0° C to 50° C
Maximum (burnout) level of incoming signal at port: +22 dBm
Weight: 2.2 pounds
Size: 8x7x2.25 inches