4957D/E/F Microwave Analyzer Quick Start Guide
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2.5.3 Communication Interfaces
1. Mini USB interface: Is used to connect the main equipment. If connected to an external
computer, the PC can run relevant tool software for programming and data transmission
of 4957D/E/F.
2. LAN (Network) Interface: Standard RJ-45 type, a 10 / 100 Mbps Ethernet connector
with a standard 8-pin structure that allows for automatic selection between two data rates.
It is used to connect to a local network or to realize remote control of the instrument.
3. Type A USB interfaces: 2, for connecting slave devices, such as USB storage devices,
a mouse or a keyboard, etc..
4. SD card slot: Micro SD card slot, which can be used for expanding the storage space
of the instrument.
5. Earphone interface: A 3.5 mm / 3-wire standard earphone interface for output of FM /
AM / SSB demodulated audio signal. When no earphone is connected to the interface,
the sound is output by the speaker of the analyzer; when an earphone is connected, the
sound output is automatically switched from the speaker to the earphone.
2.5.4 Instrument Symbols
The instrument symbol (yellow label) shown in the figure indicates that the max power
input from the test spectrum input port and the network input port is +27 dBm and the
maximum input DC level is 16 VDC. When using the instrument, do not connect a signal
exceeding this range to the port, otherwise, the instrument may be burnt down!
2.6 Battery
The 4957D/E/F is equipped with a large-capacity rechargeable li-ion battery, which can
last for more than 2 hours.
In order to ensure the battery life, the battery should be
taken out of the battery compartment during transportation and long-term storage.
For a long-term field test, it is recommended to purchase a battery of the same model as
the enclosed battery for backup.
The 4957D/E/F battery is easy to install or replace. First, open the battery cover, then put
the battery into the battery compartment, push the battery in, and finally close the battery
cover.
In addition, for the exhausted battery, the charging time in the shutdown state is more
than 6 hours. It is not recommended to make the battery empty. When the instrument
indicates that the battery level is low, please charge it in time.
