Step 7-Check The Router Operation - Sierra Wireless AirLink LX40 Hardware User's Manual

AirLink LX40 Series Hardware User Guide
Digital Output/Open Drain
Digital output/open drain, used to drive an external digital input, for example, is available
using Pin 4 on the power connector.
External Pull-Up
Resistor
Pin 4 (power connector)
Figure 2-18: Digital Output/Open Drain
Table 2-8: Digital Output / Open Drain
Pull-up
Off
Step 7—Check the Router Operation
1. When power is supplied to the AirLink LX40 router, it powers up automatically, as
Rev. 2 January 2021
V
cc
State Minimum
Off Open Circuit
Active Low —
indicated by the flashing LEDs. If it does not turn on, ensure that the:
· Power connector is plugged in and supplying voltage greater than 9 VDC.
Note: Although the LX40 operates in the range 7–36 VDC, low voltage standby mode is
enabled by default. In order to avoid the router powering on in standby mode, ensure that it is
supplied with more than 9 VDC at startup. (You can change the low voltage standby mode
settings once the router is operational. If the Power LED is red, the router is in standby mode.)
· On/Off control (pin 3) is connected to the battery or power source (see
Connect the Power on page 19 for details).
LX40
V
in
Internal pull-up
resistor
Off
Protection
On/Off
Circuitry
Typical Maximum
— —
— 0.5 V
30
Comments
—
5 mA,  5 V
Step 5—
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