Section 6 - Wireless Communication; Description Of Client And Server Wireless Networks; Olct 200 Radio Status (Rs) Icons Zzz's - Oldham OLCT 200 User Manual

SECTION 6 - WIRELESS
COMMUNICATION

6.1 Description of Client and Server Wireless Networks

OLCT 200 and WX series controller wireless transceivers utilize a FHSS (Frequency
Hopping Spread Spectrum) Server-Client network where multiple Clients synchronize
their frequency hopping to a single Server. The Server transmits a beacon at the
beginning of every frequency hop (50 times per second). Client transceivers listen for
this beacon and upon receiving it synchronize their hopping with the Server. OLCT
200's are often powered by a battery so care is taken to reduce power consuming RF
transmissions to a minimum. OLCT 200's are never used for Server operation and are
always Clients.
Each OLCT 200 wireless "broadcast" includes 10-bit monitored gas value, battery
voltage and a status byte. This proprietary wireless protocol interfaces only to WX4,
WX16, and WX64 Controllers. Controllers are capable of functioning as Clients or
Servers but only one Server is allowed per wireless network. Multiple WX series
controllers may receive the same transmissions from OLCT 200's, but only one
controller per wireless network may be configured as the Server.
Each transceiver on a wireless network must have its RADIO SETUP menus
configured to share the same Hop Channel and System ID in order to communicate
(see section 6.5). There should never be two servers with the same Hop Channel /
System ID settings in the same coverage area as the interference between the two
servers will severely hinder RF communications. The Server must be in a powered
location and should be centrally located since all Clients must receive the server's
beacon in order to communicate.
Correct planning and design of wireless systems are imperative for ensuring a
successful installation. It is highly recommended that a site drawing indicating location
of monitors and base station, line of site obstructions, and sources of RF interference
be submitted when requesting a quotation.

6.2 OLCT 200 Radio Status (RS) Icons Zzz's,

, , ,
Figure 2-1 shows the OLCT 200 data displays and identifies "radio status" (RS) icons
which appear on the LCD. RS icons, along with the TXD led (see Figure 2-1), are
useful diagnostic tools for evaluating RF communication. Status conditions indicated
(server's beacon
by the RS icon are Sleep Mode - Zzz's, Server In Range -
(server's beacon not
received at most recent attempt), Server Out of Range -
received at most recent attempt), Server Previously Out of Range - and Low
. The Server "Previously Out of Range" icon is useful in determining if
Battery -
OLCT 200 User Manual | 55