User Manual

Chapter 8 System Parameters and Comm ands
Hi-G-Tek Ltd. Micro electronics & Asset Tracking Technology - 227 -
match the OrgID and Department in the command (and they're not
0), the DataSeal stops listening to the Command Chain.
Mode
Property Name Mode
Access
Read & Write.
Data Type Byte
Constant in
H G TRe a de rPa rame te rCo de En um
HGTHFModemMode (44h)
Description
A bit orient ed value t hat controls
that controls the operation of the
DataReader.
Remarks
DataSealLib also provides several Boolean or enumerated properties that
reflect specific flags of this parameter:
CarrierSense – Determines whether the DataReader will make sure that
the RF is clear before starting transmitting a command. Use this flag when
there are DataReaders that are not connected to the same controlling
computer to avoid RF collisions. In synchronized systems this flag should
be off to ensure that the timings are deterministic.
AllowBurst – Determines whether the DataReader will listen for Burst
messages while it is not executing another RF command. If this flag is on,
you have to check for the Burst messages that the DataReader received
using t he Reader.GetBurstMessages method.
Powe rCali bration Mo de – Because temperature changes affect
t ransmission power, it is required to perform a t emperat ure t est and power
calibration process every once in a while. This property determines the
terms in which the DataReader will perform those operations. See the
online document at ion for further informat ion about the different opt ions.