Sierra Wireless AirLink RV50 Series, Hardware User'S Manual, Page: 40 / 78

AirLink RV50 Series Hardware User Guide
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Figure 3-15: Digital Output / Open Drain
Step 5 — Check the gateway operation
1. When power is supplied to the AirLink RV50
Series gateway
, 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 RV50
Series gateway
operates in the range 7 – 36 V, low
voltage standby mode is enabled by default (as of ALEOS 4.5.2), so in
order to avoid the gateway 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 gateway is operational.) If the Power LED
is red, the gateway is in standby mode.
· Ignition Sense (pin 3) is connected to the battery or power source (see Step
4 — Connect the Power on page 29 for details)
RV50
Series gateway
Pin 4
Protection
circuitry
V
in
External pull-up
On/Off
Off
Internal Pull-up
Resistor
Vcc
Table 3-9: 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