Battery
Charging
Illuminates when the battery is being charged. The indicator automatically shuts
off when the battery is fully charged.
External
Power
Illuminates when the Site Master is being powered by the external charging unit.
Serial
Interface
RS232 DB9 interface to a COM port on a personal computer (for use with the
Anritsu Handheld Software Tools program) or to a supported printer.
RF Out/
Reflection 50
W
RF output, 50
W
impedance, for reflection measurements. Maximum input is
+23 dBm at
±
50 Vdc.
Spectrum
Analyzer
RF In 50
W
RF input, 50
W
impedance, for spectrum analysis measurements. Maximum in-
put is +43 dBm at
±
50 Vdc.
Ext Freq
Ref/Ext Trigger
Input for an external reference signal or trigger in Spectrum Analyzer mode.
T1/E1
Receive/
Transmit
Transmit and Receive connectors for T1 and E1 measurements (Option 50,
S331D only)
Frequency
Converter
Interface
(Option 6)
Ten pin D-style connector providing an interface to control and communicate
with an Anritsu frequency conversion module.
Headphone
Jack
Provides audio output for the built-in AM/FM demodulator for testing and trou-
bleshooting wireless communication systems.
2-2
Chapter 2 Functions and Operations