Globalstar STX3 - Test Modes

8545-0198-01 Revision 1.9 STX3 Users Manual
9/24/2020 Globalstar, Inc. Confidential and Proprietary Page | 27
6 Test Modes
The STX3 provides several test modes intended to aid in manufacturing testing and certification testing.
All test modes are activated by grounding selective pins on the STX3 prior to applying power. Once power is applied, the STX3 will
sample the states of the pins and based on the states of the pins, the STX3 will enter the selected test mode. For normal operation
these pins must be left floating or in a high (logic 1) state.
The following tables define the different test modes available in the STX3.
TEST1
TEST2
Mode
0
0
Mod Mode (continuous transmission) - A test packet is continuously
transmitted for 30 seconds then transmissions will cease. The test packet
shall comply with the Air Interface Packet format with a user information
equal to the hex stream 0x80AAF0F0F0AAF0F0F0 where the most
significant bit is transmitted first
1
0
Test Packet - The test packet shall comply with the Air Interface Packet
format with a user information equal to the hex stream
0x80AAF0F0F0AAF0F0F0 where the most significant bit is transmitted first
0
1
CW mode - An un-modulated carrier is continuously transmitted.
1
1
Normal Operation
The channels are selected via the Rx and RTS pins as follows
RX
RTS
Channel
0
0
B
0
1
C
1
0
Reserved
1
1
Channel specified in the flash setup. To specify channel A, it must be the
default channel specified in the flash setup. See Setup command for
details.