MTCBA-C1-N16 Multi-Tech Systems, MTCBA-C1-N16 Datasheet - Page 79
MTCBA-C1-N16
Manufacturer Part Number
MTCBA-C1-N16
Description
MODEM ETHERNET
Manufacturer
Multi-Tech Systems
Datasheets
1.MTCBA-C1-N16.pdf
(135 pages)
2.MTCBA-C1-N16.pdf
(2 pages)
3.MTCBA-C1-N16.pdf
(29 pages)
Specifications of MTCBA-C1-N16
Function
Transceiver, CDMA, Modem
Modulation Or Protocol
CDMA2000
Frequency
800MHz, 1.9GHz
Applications
Aeris Networks (USA)
Interface
RS-232
Data Rate - Maximum
153.6 kbps
Voltage - Supply
9 V ~ 32 V
Package / Case
Module
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
Q4976016
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MTCBA-C1-N16
Manufacturer:
Multi-Tech Systems
Quantity:
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Audio Subsystem Overview
The audio sub-system block diagram below indicates where the various gains and AT commands take effect.
Since the AT command values are saved separately for each audio path, the audio gains should be tuned
independently for each audio path. Note that the +CLVL is intended to operate like a volume control, so it should
be set to 0dB gain during the tuning process (this is the default value).
Tuning Audio
Note: PCM digital voice is not supported in the Multi-Tech models.
Audio parameters need to be set for each device connected to the audio sub-system. The audio parameters are
saved independently for the three audio paths: Analog 1 and Analog 2. Tune the audio parameters using the
procedures detailed below.
Multi-Tech Systems, Inc. CDMA C1 AT Commands Reference Guide (PN S000478C)
Chapter 15 – Audio Commands
Analog
1. Select the relevant audio path, and issue the AT+VIP command the set the audio parameters to their
2. Set +MGE so that the microphone output plus MGE gain is 23dB to 25dB below 2.828Vpp.
3. Make a voice call.
4. Adjust +VGT to appropriate levels.
5. Adjust +VGR to appropriate levels.
6. Adjust +WSDG, if applicable.
default values.
Chapter 15 – Audio Commands
79
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