Qualcomm GSP-1620 specifications DTR Switch Positions, Position Switch Label Effect

Integrator’s Reference Manual

Figure 2-3. Modem Diagnostic Cable

PC Connector	Modem connector
"P1 - PC"	"P2 - module"

Lock ring

AC Wall

adapter

Power connector

Locking threads

POS 2

DTR OPEN

POS 1	POS 3
DTR to GRD	NOT USED

DTR Switch box

005AA_01

Table 2-1. DTR Switch Positions

Position	Switch Label	Effect
POS 1	DTR to GND	DTR is asserted.
POS 2	DTR Open	DTR is de-asserted.
POS 3	Not Used	DTR is de-asserted
		(equivalent to POS 2).
		Note: Some cables are equipped with a
		two-position switch box and do not
		have “POS 3.” The switch positions for
		these cables are “POS 1 DTR to GND”
		(DTR asserted) and “POS 2 DTR
		Open” (DTR de-asserted).

2-8 80-99208-1 Rev. D