Atec Aeroflex-3920B - Manual (Page 6)

P25 Trunking Operation VHF/UHF/700/800 MHz
(390XOPT201)
To further enhance P25 operation, the addition of the P25 trunking
option allows simulation of a P25 control channel in any frequency
band. Channel plans may be configured to test virtually any P25
trunked system. A simulator tile logs the messages sent by the
radio under test and allows the 3920B to simulate a virtual mobile,
configured to talk to the radio under test. This option enables the
user to originate a group call to the radio under test or make a group
call from the radio under test to the 3920B. In addition, the user can
have multiple radios register and affiliate with the 3920B and then
originate calls from one radio to the other radios.
P25 Trunking Simulation
lSM Generate and Receive/Analysis (390XOPT204)
In addition to the standard P25 modulation, also available on the
3920B is the capability to generate and receive Linear Simulcast
Modulation (LSM). This option, available as an extension of P25 con-
ventional operation, enables measurements that are specific to LSM.
It also adds a graphical analysis of the demodulated LSM signal that is
normally only found in vector signal analyzers. Since LSM is a
complex type modulation, this plot shows the inphase versus
quadrature phase (I versus Q) of the demodulated LSM signal. In
addition, this option adds Error Vector Magnitude to the selection of
measurements available from the UUT Measurements tile.
LSM Signal Analysis Screen
P25 Control Channel logger Option (390XOPT206)
This option provides the user a tool to perform advanced protocol
analysis on both control channel and voice channel data. With this
option the user can log P25 data by streaming the received data in real
time from the Ethernet port to a PC. This data is logged in an XML
format so that the user can easily view the data using a text editor or
use an external program to perform further analysis on the data. This
data can be logged at three different levels ranging from the raw data
symbols up through decoded data. The data is time-stamped on a
frame by frame basis. In addition to being able to log data, the user
can also send data to the 3920B to be transmitted, making the 3920B
into a completely user defined data modem for P25.
SmartZone and SMARTnET (390XOPT207)
This option provides support for Motorola Astro SmartZone and
SMARTNET systems, including support for rebanded channels in
the 800 MHz band.
KVl Keyloader Option (390XOPT209)
This option provides an interface to the KVL Keyloader enabling
the user to be able to directly enter keys into the 3920B using a
KVL-3000+.
Analog Simulcast Option (390XOPT210)
This option is actually an extension to the Audio Analyzer option
and acts as a tracking generator for the audio analyzer. This feature
is designed primarily for use in characterizing the performance of
Motorola Analog Simulcast systems and enables detailed alignment
of the 0-100 Hz band. In addition, this option allows for extended
characterization of audio circuits from 0-10 kHz.
Explicit Mode Trunking (390XOPT212)
The advanced form of frequency channel assignment known as
Explicit Messaging is supported by adding option 390XOPT212 to
the P25 Trunking Operation VHF/UHF/700/800 MHz option. The
explicit mode of operation assigns the actual channel/frequency over
the air by providing the exact TX and RX frequency assignments
directly to the radio.
Unit to Unit Call (390XOPT213)
This option adds capability of testing the unit to unit call functionality
of a mobile station to the P25 trunking option. The user can either
originate a unit to unit call from the mobile station or from the test
set.
Adjacent Channel Broadcast Message (390XOPT214)
This option adds the adjacent status broadcast message to the
control channel messages transmitted by the 3920B. This will
enable the user to test the capability of the mobile station to operate
correctly in the presence of this message. The purpose of this
message is to inform mobile stations of the presence and status of
sites adjacent to this particular site.
Secondary Control Channel Broadcast Message
(390XOPT215)
This option adds the secondary control channel broadcast message
to the control channel messages transmitted by the 3920B. This will
enable the user to test the capability of the mobile station to operate
correctly in the presence of this message. This message is used to
inform mobile stations of other control channels or other potential
backup control channels at this site.
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