Specifications

AVIDdirector-M2M™ Technical Reference Guide
February 5, 2009 ©AVIDwireless 2004-2009 All Rights Reserved Page 8 of 55
involved and transient voltages from motors or relays. The PSoC processor allows the outputs to be
configured as either active source/active sink, or having the source and sink operate independently.
HVC devices are powered by either the main device supply voltage, (Vsupply – 16 VDC max) or
external voltage (Vrail) of no more than 30 VDC. This determines the maximum voltage, which can be
supplied or controlled (synced). An internal jumper (JP1) is normally installed to supply Vsupply power
to pin 12 of the I/O connector and the HVC devices. Removing it allows a higher voltage to be
connected to pin 12 and supply Vrail to the HVC components.
It is very important that Jumper settings are correct before an external voltage is supplied to
Vrail (Pin 12) Please review Jumper settings in Appendix 10 before proceeding!
b. Analog input to measure voltage levels on a particular line
Where the digital inputs have only two values (on(1) and off(0)) this allows reading the level in 4096
steps (12 bits). On the TTL1 to TTL4 and RX2, TX2, CTS2, RTS2 inputs this allows reading a signal
from 0 to +5VDC in 1.2mV steps, and on the HVC1, HVC2 inputs, up to 24VDC (assuming Vrail is 30
VDC) in 7.4mV steps.
c. Analog output signals
This is designed to generate a precise voltage on the output, an example being to control a DC motor or
light intensity. These outputs also occur in 62 steps (default setting). The PSoC processor is capable of
driving 40 mA analog output but the protection fuses will limit this to 25 mA. Analog output is available
on the ports TTL1, TTL2, RX2, TX2.
d. Serial communication.
This is needed to communicate to a variety of devices, including other radios, GPS, X-10 automation
units, security systems, industrial PLC control systems and medical devices. Serial communication
commonly uses either RS-232 levels (+/- 3 to 25 VDC) or TTL (0 to +5 VDC). The device has a serial
port dedicated to each interface. The RS-232 interface uses the common DB-9 female connector (as
used on PCs) and the TTL interface uses a RJ-12 connection (commonly available for phone systems).
The RJ-12 connector also has +5VDC and ground on the innermost pins, allowing it to power a small
devices (such as a RS-232 to TTL daughterboard or GPS) and on the DB-9 pin 9 supplies +5VDC at
250 ma to power external devices.
There are two status lights, both containing two color LEDs, capable of displaying one of three colors (e.g. Red,
Green and Orange (Red+Green)). The first light is use to indicate system or application status. It will normally
be a off unless a sensor action or reading is in progress, at which time it will be a Red color for sending out
messages and Green for processing received commands. If an error occurs in the system the LED will flash
Orange to indicate the error condition. During system initialization and boot up the LED will flash Red to indicate
progress. The second light is used to indicate radio status. When the radio is in range, the light will be Green
and flash Red for transmit. If the radio is out of range it can display an alternating Red and Orange color (1
second each), not authorized by the carrier (3 seconds Orange), and if the radio is turned off, the LED display
will be off.
Power Supply Design
The telemetry terminal is designed to operate within a vehicle, device (e.g. vending machine) or from batteries
or an external power supply. It features a fault tolerant voltage regulator design to withstand voltage spikes,
load dumps and other hostile electrical environments. It operates with input power from 8 to 16 volts and will not
be damaged by higher voltages (it may shutdown or blow a fuse above 28 V) or if it is connected in reverse.
System power is provided using a Phoenix connector that latches to the device to ensure a secure lock.
The device uses only linear power supplies for the primary voltage regulation to ensure RF noise is not
generated that would affect the receivers. The board has a large heat sink area to provide thermal conduction of
the regulator’s heat.
Environment Design
The AVIDdirector-M2M’s allowable operating temperature range is limited by the Wavenet Boomer modem that
has an operating temperature range of –20
o
C to +60
o
C (Extended temperature range). The Imsys Cjip, Cypress