XC09-009NSC Digi International/Maxstream, XC09-009NSC Datasheet - Page 25
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XC09-009NSC
Manufacturer Part Number
XC09-009NSC
Description
MOD RF 900MHZ 9600BPS W/RPSMA
Manufacturer
Digi International/Maxstream
Series
9XCite™r
Specifications of XC09-009NSC
Frequency
900MHz
Data Rate - Maximum
9.6kbps
Modulation Or Protocol
FHSS, FSK
Power - Output
6dBm
Sensitivity
-108dBm
Voltage - Supply
2.85 V ~ 5.5 V
Current - Receiving
45mA
Current - Transmitting
55mA
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
-
9XCite™ OEM RF Module – Product Manual v2.1 [2007.01.04]
LH (Wake-up Initializer Timer) Parameter
<Non-AT Settable Parameter: Sleep (Low Power)> LH Parameter adjusts the duration of time in
which the wake-up initializer is sent. When receiving modems are put into the Cyclic Sleep Mode,
they power-down after a period of inactivity (specified by ST (Time before Sleep) Parameter) and
will periodically awaken and listen for transmitted data. In order for the receiving modems to ini-
tialize with the transmitter, they must detect ~35ms of the wake-up initializer. LH Parameter must
be used whenever a receiver is operating in Cyclic Sleep Mode. This lengthens the wake-up initial-
izer to a specific amount of time (in x 100 ms). The long wake-up initializer must be longer than
the cyclic sleep time that is determined by SM (Sleep Mode) Command. If the wake-up initializer
time were less than the Cyclic Sleep interval, the connection would be at risk of missing the wake-
up initializer transmission. The following data and figures illustrate this behavior:
Parameter Range: 0 - 0xFF [x 100 ms]
# of bytes returned: 1
Default Parameter Value: 0x01 (0.1 second)
Related Parameters: HT (Time before Wake-up Initializer), SM (Sleep Mode), ST (Time before
Sleep)
Figure 3‐01. Correct Configuration (LH > SM)
The length of the wake-up initializer exceeds the time interval of Cyclic Sleep. The receiver is guar-
anteed to detect the wake-up initializer and receive the accompanying payload data.
Figure 3‐02. Incorrect Configuration (LH < SM)
The length of the wake-up initializer is shorter than the time interval of Cyclic Sleep. This configu-
ration is vulnerable to the receiver waking and missing the wake-up initializer (and therefore also
the accompanying payload data).
© 2007 MaxStream, Inc.
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