Specifications

CES SUPPORT 407-679-9440 Page 6 MAN78 © CES 1998
Status
By appending additional digits to the preprogrammed identity sequence, the driver can send messages to the dispatcher,
with each additional digit having a “canned” or pre determined understanding. For example, if using the ARi-100
module as the mobile signaling device, the driver can have three external switchs representing say, “on route”, “lunch”
and “arrived”. By activating any of the switches, the radio will transmit the mobile users identity, together with the
status digit representing the switch activated.
This is then decoded and displayed by the ARi-195e for the dispatcher to view.
Autocall
By installing the CES ARi-100 module in the mobile radio, the mobile user can double click the microphone PTT to
send an autocall sequence (as distinct form a single pressel with transmits an ANI). This is in fact a “status’ as defined
above, with the exception that the “status” transmission” is activated by the “double click” of the microphone PTT.
This message is decoded by the ARi-195e and displayed as an Autocall as opposed to an ANI (because it differs from
the ANI by an extra digit appended to the identity sequence). This “double click” can be interpreted by the dispatcher as
a “request to talk” by the mobile user.
Emergency
A separate emergency input is provided in the CES ARi-100 mobile module. It this input is activated, the
ARi-195e will decode and display it as an emergency transmission from the mobile.
Tone Sequential
An internationally recognized set of tone frequencies and tone periods for the transmission of ANI and Status
information over wireless infrastructures. See page 22 for a complete list. The ARi-195e base display console and the
ARi-100 mobile module allow the user to determine their own set of frequencies. This is termed “user-defined
frequencies” or “n-tone” in this manual and other CES manuals.
DTMF
An internationally accepted set of tone frequencies and tone periods for the transmission of ANI and Status information
over various communications infrastructures. CES recommends tone sequential formats whenever possible.
Precode
These are the digits the ARi-195e will expect to see first in any transmission received from a mobile. Programming
precode digits reduces false decoding. These digits are fixed and common to all units in the fleet. If programmed in the
system and not present when a sequence is received, the ARi-195e ignores the signal received.
For example, if there are 300 vehicles in the fleet, and a 5 digit identity is planned, fix the first two digits to 10
throughout the entire fleet, and the last three digits according to the mobile identity. Program the ARi-195e for a
precode of 10. The ARi-195e will then not decode a sequence unless it commences with 10.
Tone Blanking
When using a precode, the ARi-195e will mute the base radio receiver when it decodes the precode digits. This
prevents dispatch annoyance, particularly when long tone sequences are received. To mute the entire sequence received,
use the optional VAD1 or VAD-8 Audio Delay Board. See Audio Delay Technology below.
Tone Period