Installation and Startup
Rev. 1 June 2019
35
41113042
Digital Output/Open Drain
You can use Pin 4 as an open drain to drive an external digital input
Figure 2-17: Digital Output/Open Drain
Step 6—Check the Router Operation
1.
When power is supplied to the AirLink RV55 router, it powers up automatically, as
indicated by the flashing LEDs. If it does not turn on, ensure that the:
·
Power connector is plugged in and supplying voltage between 7–36 V.
Note: Although the RV55 router operates in the range 7–36 V, low voltage standby mode is
enabled by default, so in order to avoid the router powering into standby mode, ensure that it is
supplied with more than 9 V at startup. (If desired, you can change the low voltage standby
settings once the router is operational.) If the Power LED is red, the router is in standby mode.
·
Ignition Sense (pin 3) is connected to the battery or power source (see
on page 24 for details)
RV55
V
in
V
cc
External Pull-Up
Resistor
Internal pull-up
resistor
Off
Protection
Circuitry
Pin 4 (power connector)
On/Off
Table 2-10: Digital Output / Open Drain
Pull-up
State
Minimum
Typical
Maximum
Units
Comments
Off
Off
Open Circuit
—
—
—
—
Active Low
—
—
0.5
V
5 mA,
5 V