Cell Master User Guide : General Information : Instrument Description
 
Instrument Description
The Cell Master MT821xE is a handheld multi-function Base Station Analyzer designed to make Cable and Antenna Analysis, Spectrum Analysis and Power Meter measurements in the field. In addition, the Cell Master can be equipped with 2-port Transmission Measurement capability, Interference Analyzer, Channel Scanner, Coverage Mapping, CW Signal Generator, GSM/EDGE Analyzer, W-CDMA/HSDPA Analyzer, TD-SCDMA Analyzer, CDMA Analyzer, EVDO Analyzer, Fixed and Mobile WiMAX Analyzer, PIM Analyzer, T1/T3, E1 Analyzer, LTE Analyzer, and TD‑LTE Analyzer, thus eliminating the need to carry multiple instruments to the field.
The cable & antenna analyzer includes Return Loss, Cable Loss, VSWR, Distance-to-fault -Return Loss, Distance-to-Fault SWR, 1-port phase and smith chart measurements. The 2-port transmission measurement option includes two power levels and access to a built-in 32V bias tee.
The bright 8.4" TFT color display provides easy viewing in a variety of lighting conditions. The Cell Master MT821xE is equipped with a Li-Ion battery delivering more than three hours of battery life.
The combination of a touch screen and keypad enables users to navigate menus with the touch screen and enter numbers with the keypad.
Time and date stamping of measurement data is automatic. The internal memory provides for the storage and recall of up to 1000 measurement setups and up to 1000 traces using Master Software Tools (MST). Measurements and setups can be stored in a USB flash drive or transferred to a PC by using the included USB cable.
Note 
Not all after‑market USB drives are compatible with the Cell Master. Many drives come with a second partition that contains proprietary firmware. This partition must be removed. Only one partition is allowed. Refer to the individual manufacturer for instructions on how to remove it. You may also try reformatting a drive that contains a single partition using FAT32 format.