ThingMagic Nomad RFID Design Guide - Manual (Page 3)

Nomad
RFID
Reader
Design
Guide
Page
3
Nomad RFID Reader Design Guide
Introduction
This guide provides useful information for developers of applications for the Nomad when
equipped with the UHF RFID reader.
Coexistence with other RF-based functions
When the UHF RFID reader is actively scanning, there is no impact to the following services:
• Bluetooth (BT)
• WiFi
• GPS
WWAN is operational while an RFID scan is active, but the maximum data transfer rate has
been found to be reduced by 25%.
Coexistence with non-RF-based functions
When the UHF RFID reader is actively scanning, there is no impact to the following services:
• Camera
• Barcode Scanner
Note: ScanAgent and RFIDSearchLight cannot be used simultaneously but applications can be
written that enable dual use.
From an application perspective, the only known conflict is that Notepad is impacted by RFID
Searchlight – the record button does not work.
Power Consumption
The Nomad battery is rated at 18 Watt-hours. The amount of time the Nomad can operate on a
full charge depends on the operational state the Nomad is in during that period. The following
table shows typical power consumption levels for various common states.
Reference Nomad State Power
Consumption
A Average idle power consumption (all wireless off, backlight off,
processor idling, room temperature) 1.1 W
B Additional power consumption when GPS is continuously tracking 0.2 W
C Additional power consumption when keyboard wedge is enabled 0.4 W
D Additional power consumption when keyboard wedge is
continuously reading tags 3.0 W