Quectel BC95 User manual

BC95 Power Consumption
Testing on EVB User Guide
NB-IoT Module Series
Rev. BC95_Power_Consumption_Testing_on_EVB_User_Guide_V1.0
Date: 2017-06-21
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About the Document
History
Revision
Date
Author
Description
1.0
2017-06-21
Ewent LU
Initial
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Contents
About the Document...................................................................................................................................2
Contents.......................................................................................................................................................3
Table Index...................................................................................................................................................4
Figure Index.................................................................................................................................................5
1Introduction..........................................................................................................................................6
2GSM EVB Modifications......................................................................................................................7
3PSM Power Consumption Testing Procedures................................................................................8
4Appendix A References.....................................................................................................................10
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Table Index
TABLE 1: RELATED DOCUMENTS.................................................................................................................. 10
TABLE 2: TERMS AND ABBREVIATIONS........................................................................................................ 10
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Figure Index
FIGURE 1: GSM EVB MODIFICATIONS DIAGRAM .......................................................................................... 7
FIGURE 2: GSM EVB CONNECTION DIAGRAM .............................................................................................. 8
FIGURE 3: DC POWERANALYZER AND GSM EVB CONNECTION DIAGRAM ............................................. 9
FIGURE 4: DISPLAY OF POWER CONSUMPTION DATA................................................................................ 9
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1Introduction
Quectel GSM EVB can be used for power consumption testing after modifications. This document mainly
introduces how to modify the GSM EVB to facilitate power consumption testing in power saving mode
(PSM) for Quectel NB-IoT BC95 series module, and to help customers obtain the accurate power
consumption data.
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2GSM EVB Modifications
In order to use the GSM EVB to test the power consumption of NB-IoT BC95 series module, following
modifications should be conducted:
1. Remove resistors on R101, R102 and R110 for an external power source to supply power to the
module independently;
2. Solder a 0R resistor on R224 for the 5V power adaptor to supply power for RS-232 level shifter IC
independently.
R101
R110
R224
R102
Figure 1: GSM EVB Modifications Diagram
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3PSM Power Consumption Testing
Procedures
Once the GSM EVB is modified, please follow the steps below to test the power consumption in PSM for
BC95 series module:
1. Connect BC95-TE-Ato 60-pin connector, and fix it with studs and nuts;
2. Insert a USIM card;
3. Connect the main and debug port to the PC respectively with USB to UART converter cables;
4. Regulate the output voltage to 3.6V on DC power analyzer, and connect the binding posts to J103
according to the negative and positive electrodes, to supply power for the module separately;
5. Connect the GSM EVB to the 5V power adaptor, and switch S202 to ON state;
6. Press ON button on DC power analyzer to turn on the power supply in “Power Supply Outputs”area
to test the power consumption of the module;
7. Send AT+NCONFIG=AUTOCONNECT,FALSE and AT+CFUN=0 commands to let the module enter
PSM. For details aboutAT commands, please refer to document [1].
USB to UART
Converter Cable
5V Power Supply
USB to UART
Converter Cable
USIM Card
RF Antenna
J103
S202
BC95-TE-A
Figure 2: GSM EVB Connection Diagram
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Figure 3: DC Power Analyzer and GSM EVB Connection Diagram
Figure 4: Display of Power Consumption Data
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4Appendix A References
Table 1: Related Documents
Table 2: Terms and Abbreviations
No.
Document Name
Remark
[1]
Quectel_BC95_AT_Commands_Manual
BC95AT commands manual
[2]
Quectel_GSM_EVB_User_Guide
GSM EVB user guide for BC95 module
Abbreviation
Description
EVB
Evaluation Board
IC
Integrated Circuit
NB-IoT
Narrow Band Internet of Things
PSM
Power Saving Mode
UART
Universal Asynchronous Receiver & Transmitter
USIM
Universal Subscriber Identification Module
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