Applanix APX-18 Donanım Entegrasyon Kılavuzu - Sayfa 9

Alıcı Applanix APX-18 için çevrimiçi göz atın veya pdf Donanım Entegrasyon Kılavuzu indirin. Applanix APX-18 15 sayfaları.

5.1.1. LED Signals

These signals are intended to drive LEDs to indicate the status of the board.

Maximum current supplied by each pin is 4mA. When used to drive LEDs, series

resistors with a typical value of 300 Ohms are required. The LEDs with forward voltage

above 2.7V or current excess of 4mA will require external buffer.

The LED signals are defined as follows:

 Power LED: High when unit is on, low when unit is off.

 RTK LED: Flashes when RTK corrections are present.

 Satellite LED: Rapid flash indicates tracking of less than 5 satellites; slow flash

indicates tracking of 5 or more satellites.

 IMU NAV Status LED: Indicates navigation status as per Table 2.

Status

Unknown or No SNV Solution

Coarse Levelling

Degraded Solution

Aligned Solution

The supported USB interface is 2.0. The interface can be configured as a host to talk to a

USB flash device for removable external storage.

USB host device configuration:

 Connect pin 14 (USB ID) to one of the signal ground pins on the connector.

 Use pin 5 (USB VBUS 5V) to power up the USB storage device

 Connect the storage device ground to one of the signal grounds on the connector

or mounting hole.

 Connect the differential data lines (pin 9 and 11) to corresponding USB interface

on device.

The logging functionality is also supported by an onboard 6G memory card.

The PPS (Pulse per Second, pin 4) is the signal that indicates the integer epoch of

UTC/GPS time. It is a TTL 3.3V pulse active high with maximum current of 4mA.

OR BY ANY MEANS WITHOUT THE PRIOR WRITTEN CONSENT OF APPLANIX CORPORATION.

Signal Status

Off

5Hz

2Hz

1Hz