HTC VIVE Tracker 3.0 - VIVE Tracker 3.0 Automatic Turn Off Reasons; Using the Dongle for Tracking

VIVE Tracker (3.0)
HTC Corporation
Developer Guidelines
V1.0
12/16/2020
4 HTC Confidential and Proprietary
GPIO Pin Electrical Characteristics (Supply voltage VDD = 3.3 V)
Symbol
Parameter
Min
Typ
Max
Unit
V
OH
High-level output voltage
VDD - 0.4
--
--
V
V
OL
Low-level output voltage
--
--
0.4
V
V
IH
High-level input voltage
0.7VDD
--
--
V
V
IL
Low-level input voltage
--
--
0.3VDD
V
I
OH
High-level output current
--
2
mA
I
OL
Low-level output current
--
2
mA
I
IH
High-level input current
-1
0.5
1
nA
I
IL
Low-level input current
-1
0.5
1
nA
To establish a stable wireless connection between the VIVE Tracker (3.0) and the dongle, the
OTA performance of VIVE Tracker (3.0) cannot degrade to more than 3dB when an accessory
is attached to the VIVE Tracker (3.0).
The following are recommendations for better RF performance.
.
Figure: Illustrates the “keep out” area where only nonmetallic parts of the accessory should be inside (spherical
radius = 30 mm with the center being the antenna feed point)