Anritsu BTS Master MT8222A, Руководство пользователя, Страница: 38 / 115

Instrument Overview 2-10 Test Panel Connectors
BTS Master UG PN: 10580-00156 Rev. T 2-15
External Power
The external power connector is used to power the unit and for battery charging. Input is
12 VDC to 15 VDC at up to 5.0 A. A green flashing indicator light near the power switch
shows that the instrument battery is being charged by the external charging unit. The
indicator is steadily illuminated when the battery is fully charged.
LAN Connection
The RJ-45 connector is used to connect the BTS Master to a local area network. Integrated
into this connector are two LEDs. The amber LED shows the presence of a 10 Mbit/s LAN
connection when on, and a 100 Mbit/s LAN connection when off. The green LED flashes to
show that LAN traffic is present. For additional information about the LAN connection,
Ethernet connection, and DHCP, refer to
Appendix C, “LAN and DHCP” .
USB Interface – Type Mini-B
The USB 2.0 interface can be used to connect the MT8222A BTS Master directly to a PC.
The first time the MT8222A is connected to a PC, the normal USB device detection by the
computer operating system will take place. The CD-ROM that shipped with the instrument
contains a driver for Windows XP that is installed when Master Software Tools is installed.
Drivers are not available for earlier versions of the Windows operating system. During the
driver installation process, place the CD-ROM in the computer drive and specify that the
installation wizard should search the CD-ROM for the driver.
USB Interface – Type A
The MT8222A BTS Master can also be a USB Host and allow various USB Flash Memory
devices to be connected to the instrument for storing measurements, setups, and files.
Headset Jack
The headset jack provides audio output from the built-in AM/FM/SSB demodulator for testing
and troubleshooting wireless communication systems. The jack accepts a 2.5 mm 3-wire
miniature phone plug such as those commonly used with cellular telephones.
Ext Trigger In
A TTL signal that is applied to the
External Trigger
female BNC input connector causes a
single sweep to occur. In the Spectrum Analyzer mode, it is used in zero span, and triggering
occurs on the rising edge of the signal. After the sweep is complete, the resultant trace is
displayed until the next trigger signal arrives. This port is also used for External Clock
Recovery in T1/T3/E1 operations (described in the Backhaul Measurement Guide). Refer to
Appendix A, “Measurement Guides” for reference to the Backhaul Measurement Guide,
which can be found on the documentation disc and the Anritsu web site.
Warning
When using the AC-DC Adapter, always use a three-wire power cable that is
connected to a three-wire power line outlet. If power is supplied without grounding
the equipment in this manner, then the user is at risk of receiving a severe or fatal
electric shock.
Note
For proper detection, Master Software Tools should be installed on the PC prior to
connecting the BTS Master to the USB port.