ThingMagic M5e-Compact - Manual (Page 36)

Antenna Ports
36 Functionality of the Embedded Modules
The default, module-wide, setting is specified using Set Read TX Power (92h) . This
setting is used for all read operations on all ports, except:
The power for individual logical antennas can be specified using Set Antenna’s Power
and Settling Time . When a logical antennas power is set using that command it will
override the module-wide setting for all read operations.
TX Write Power
The TX write power is used only during commands that change a tag’s state. This
includes commands for Lock, Kill, as well as Tag ID Write and Tag Data Write.
Note
When performing write operations as part of Tag Inventory With Embedded
Operations the TX Read Power will be used for those write operations, NOT
the TX Write Power.
The TX Write Power can be set in two ways:
The default, module-wide, setting is specified using Set Write TX Power (94h) . This
setting is used for all write operations on all ports, except:
The power for individual logical antennas can be specified using Set Antenna’s Power
and Settling Time . When a logical antennas power is set using that command it will
override the module-wide setting for all write operations.
Note
During Write commands, which both write to and verify the written contents,
the entire operation will be done at the Tx Write Power, including tag
singulation and the write verify.
Antenna Ports
The modules have two antenna ports, except for the M5e-Compact which has one. While
each port is capable of both transmitting and receiving, only one port can transmit or
receive at a time. The antenna ports can be configured for either monostatic or bistatic
mode using the Set Antenna Port command
Set Antenna Port (91h) or selecting the
antenna port from the Reader Assistant Antenna Port menu Configuring the Reader .
In addition, the modules support Using a Multiplexer , allowing up to eight logical antenna
ports, controlled using the two GPOutput lines and the internal physical port J1/J2
switching.