MTCMR-G-F4 Multi-Tech Systems, MTCMR-G-F4 Datasheet - Page 25

• Manufacturer Part Number: MTCMR-G-F4
• Description: MODEM GPRS QUAD BAND GSM GLOBAL
• Manufacturer: Multi-Tech Systems
• Series: MultiModem® iCellr

Specifications of MTCMR-G-F4

• Frequency: 850MHz, 900MHz, 1.8GHz, 1.9GHz
• Applications: General Purpose
• Interface: RS-232, USB
• Function: Transceiver, Modem
• Data Rate - Maximum: 115.2kbps
• Modulation Or Protocol: GSM, GPRS
• Voltage - Supply: 9 V ~ 32 V
• Package / Case: Module with Case
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Power - Output: -
• Sensitivity: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 881-1151; MTCMR-G-F4

Multi-Tech Systems, Inc. GPRS AT Commands Reference Guide (Document Number S000293J)
The application sends the following:
The gain values listed here are relative, for absolute (electrical) values please refer to the specific hardware
documentation of the module used in the application.
AT+VGR=<val> for receive gain
0 to 15
16 to 31
32 to 47
48 to 63
64 to 79
80 to 95
96 to 111
112 to 127
128 to 143
144 to 159
160 to 175
176 to 191
192 to 207
208 to 223
224 to 255
+6 db
+4 db
+2 db
+0 db
-2 db
-4 db
-6 db
-8 db
-10 db
-12 db
-14 db
-16 db
-18 db
-20 db
-22 db
AT+VGT=<val>
Controller 1
0 to 31
32 to 63
64 to 95
96 to 127
128 to 159
160 to 191
192 to 223
224 to 255
for transmit gain
Controller 1
+30 db
+33 db
+36 db
+39 db
+42 db
+45 db
+48 db
+51 db
AT+VGT=<val>
Controller 2
0
1
2
3
…
19
20
21
22
23
…
58
59
60
61
62
…
101
102 to 127
128 to 243
244
245
246
…
255
Chapter 5 – Call Control Commands
for transmit gain
Controller 2
+0 db
+0,5 db
+1 db
+1,5 db
…
+31 db
…
-6 db
-5,5 db
-5 db
-0,5 db
+9,5 db
+10 db
+10.5 db
+11 db
+11.5 db
+29 db
+29.5 db
+30 db
+30,5 db
+50,5 db
+51 db
-6,5 db
…
25