Pinnacle
TM
100 Modem
Hosted Mode Low Power User Guide
https://www.lairdconnect.com/
14
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5
LTE
C
AT
-NB1
L
OW
P
OWER
O
PERATION
,
R&S
CMW500
5.1
Uplink Subcarrier Spacing: 15 kHz with 12 subcarriers
5.1.1
Cat-NB1 15KHz eDRX
Follow the steps below to configure the Pinnalce
TM
100 modem for low power operation. Figure 14,shows the commands sent.
at+cedrxs=1,5,5 (Note 1& 2)
Toggle DTR to change from HL7800 to nRF radio comm
at+aslp 1
Toggle DTR to change from nRF to HL7800 radio comm
Move M2.59 Jumper from J9 Pin 11 (1.8V) to J9 Pin12 (GND)
Should see CTS Turn from Green to Red On UwTerminalX
Note 1: Per Sierra Wireless recommendations: Use eDRX cycle 81.92 sec, a PTW of 10.24 sec was selected, both
parameters are controlled by the CMW500 setup
Note 2: That same sequence of commands is used to put the modem into PSM, except at+cedrx is replace by at+cpsms.
Note 3: The Current is observed using the Keysight N6705C DC Power Analyzer with ranges set to Auto to get wide dynamic
current range from uA to A.
Figure 15, shows the PTW and eDRX cycle, and Figure 16, shows the Avg Current per hour is 0.729 mA/H.
Figure 14: eDRX Cat-NB1, Low Power Mode Command Sequence