FreeWave Technologies Inc. 218151431519 用户手册
760 Mhz Data Transceiver Users Manual
LUM0000XX Rev A
Version 1.0
21
to Send LED. A solid red CTS LED indicates a strong signal; a blinking CTS LED indicates a weaker
signal.
signal.
(4)
RF
D
ATA
R
ATE
FreeWave transceivers have five settings for the RF Data Rate (1, 2, 3, 4, 5 ). RF Data Rate should not
be confused with the serial port Baud Rate.
be confused with the serial port Baud Rate.
Setting 2 should be used when the transceivers are close together and data throughput needs to be
optimized. Setting 3 should be used when the transceivers are farther away and a solid data link is
preferred over data throughput.
optimized. Setting 3 should be used when the transceivers are farther away and a solid data link is
preferred over data throughput.
Note: In MultiPoint networks, the RF Data Rate must be set identically in all transceivers. Any
transceiver with an RF Data Rate different from the Master will not establish a link.
In Point to Point networks the Master’s settings take precedence over the Slave.
RF Data Rate Setting
Occupied Bandwidth
Modulation Level
Throughput
1 50kHz
GFSK
2 25kHz
4-level
GFSK
3 25kHz
GFSK
4 12.5kHz
4-level
GFSK
5 12.5kHz
GFSK
(5)RF
X
MIT
P
OWER
The RF Xmit Power parameter allows the user to control the output transmit power up to two watts
(+33dBm).
(+33dBm).
(6)
S
LAVE
S
ECURITY
Slave security is a feature which allows Slave transceivers to accept transmissions from a Master not
included in the Call Book. The default setting is 0 (Slave Security enabled) which means, only Masters in
the Slaves’ Call Book may link to that Slave.
included in the Call Book. The default setting is 0 (Slave Security enabled) which means, only Masters in
the Slaves’ Call Book may link to that Slave.
Slave Security may be disabled (setting of 1) allowing any Master to call the Slave. Slave Security has no
effect in Point-to-MultiPoint networks where the Network ID is not set to 255.
effect in Point-to-MultiPoint networks where the Network ID is not set to 255.
Slave Security must be set to 1 when the unit is operating in Mode 6 Slave/Master switchable or a Point-
to-Point network where the Slave may need to accept calls from more than 10 different Masters. When
Slave Security is set to 1, the transceiver will accept calls from any other FreeWave transceiver.
Additional network security measures may be taken to prevent unauthorized access, such as changing
default settings for FreqKey, Hop Table or Frequency Zones.
to-Point network where the Slave may need to accept calls from more than 10 different Masters. When
Slave Security is set to 1, the transceiver will accept calls from any other FreeWave transceiver.
Additional network security measures may be taken to prevent unauthorized access, such as changing
default settings for FreqKey, Hop Table or Frequency Zones.
(7)
RTS
TO
CTS
Menu selection RTS to CTS in the Radio Parameters menu provides the option of allowing the RTS line
on the Master transceiver to control the CTS line of the Slave. This pass-through control can be enabled
in both Point-to-Point and Point-to-MultiPoint. In MultiPoint networks, the Master RTS line will control all
Slaves’ CTS lines. When enabled, the CTS line ceases to function as flow control. It is not recommended
to enable this feature when operating at RS-232 speeds above 38.4kB.
on the Master transceiver to control the CTS line of the Slave. This pass-through control can be enabled
in both Point-to-Point and Point-to-MultiPoint. In MultiPoint networks, the Master RTS line will control all
Slaves’ CTS lines. When enabled, the CTS line ceases to function as flow control. It is not recommended
to enable this feature when operating at RS-232 speeds above 38.4kB.