X09-019NSC Digi International/Maxstream, X09-019NSC Datasheet - Page 30

• Manufacturer Part Number: X09-019NSC
• Description: MOD RF 900MHZ 19.2K W/RPSMA CONN
• Manufacturer: Digi International/Maxstream
• Series: XStream™r

Specifications of X09-019NSC

• Frequency: 900MHz
• Data Rate - Maximum: 19.2kbps
• Modulation Or Protocol: FSK
• Power - Output: 100mW
• Sensitivity: -110dBm
• Voltage - Supply: 5V
• Current - Receiving: 50mA
• Current - Transmitting: 140mA
• Data Interface: PCB, Through Hole
• Antenna Connector: RP-SMA
• Operating Temperature: 0°C ~ 70°C
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Applications: -
• Memory Size: -

XStream™ OEM RF Module – Product Manual v5.x00 [2006.02.24]
RO (Packetization Timeout) Command
RP (RSSI PWM Timer) Command
RR (Retries) Command
<Serial Interfacing> Set/Read the time of silence
(no bytes received) after which transmission
begins. After a serial byte is received and if no
other byte is received before the RO timeout, the
transmission will start.
<Diagnostics> RP Command is used to enable
PWM (Pulse Width Modulation) output on the
CONFIG pin. The output is calibrated to show the
level the received RF signal is above the
sensitivity level of the module. The PWM pulses
vary from zero to 95 percent. Zero percent
means the received RF signal is at or below the
published sensitivity level of the module. The
following table shows levels above sensitivity and PWM values.
The total period of the PWM output is 8.32 ms. Because there are 40 steps in the PWM output;
the minimum step size is 0.208 ms.
Table 3‐03. PWM Chart
A non-zero value defines the time that the PWM output will be active with the RSSI value of the
last received RF packet. After the set time when no RF packets are received, the PWM output will
be set low (0 percent PWM) until another RF packet is received. The PWM output will also be set
low at power-up. A parameter value of 0xFF permanently enables the PWM output and it will
always reflect the value of the last received RF packet.
PWM output shares the Config input pin. When the module is powered, the Config pin will be an
input. During the power-up sequence, the Config pin will be read to determine whether the
module is going into AT Command Mode. After this, if RP parameter is a non-zero value, the
Config pin will be configured as an output and set low until the first RF packet is received. With a
non-zero RP parameter, the Config pin will be an input for RP ms after power up.
<Networking> Set/Read the number of retries
that can be sent for a given RF packet. Once RR
command is enabled (set to a non-zero value),
RF packet acknowledgements and retries are
enabled. After transmitting a packet, the
transmitter will wait to receive an
acknowledgement from a receiver. If the
acknowledgement is not received in the period of time specified by the RN (Delay Slots)
Command, the transmitter will transmit the original packet again. The packet will be transmitted
repeatedly until an acknowledgement is received or until the packet has been sent RR times.
Note: For retries to work correctly, all modules in the system must have retries enabled.
© 2006 MaxStream, Inc. Confidential and Proprietary
dBm above Sensitivity
10
20
30
(high period / total period)
PWM percentage
47.5%
62.5%
77.5%
AT Command: ATRO
Binary Command: 0x21 (33 decimal)
Parameter Range: 0 – 0xFFFF [x 200 µs]
Default Parameter Value: 0
Number of bytes returned: 2
Minimum Firmware Version Required: 4.2A
AT Command: ATRP
Binary Command: 0x22 (34 decimal)
Parameter Range: 0 - 0x7F
Default Parameter Value: 0 (disabled)
Number of bytes returned: 1
Minimum Firmware Version Required: 4.2A
AT Command: ATRR
Binary Command: 0x18 (24 decimal)
Parameter Range: 0 – 0xFF
Default Parameter Value: 0 (disabled)
Number of bytes returned: 1
Minimum Firmware Version Required: 4.22
[x 100 milliseconds]
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