29
www.lairdtech.com
Laird Technologies
BTM510/511
Bluetooth
®
Multimedia Module
CONFIgurINg
THE BTM510/511
Table 3-3: Gain Table
OUTPUT GAIN LEVEL OR
INPUT GAIN LEVEL
S589 OR S590
OVERALL GAIN (DBR)
S689 OR S690
22
+21.5
21
+18.0
20
+15.5
19
+12.0
18
+9.5
17
+6.0
16
+3.5
15
0
14
-3.0
13
-6.0
12
-9.0
11
-12.0
10
-15.0
9
-18.0
8
-21.0
7
-23.5
6
-27.0
5
-29.5
4
-33.0
3
-35.5
2
-39.0
1
-41.5
0
-45.0
TASK
AT-COMMAND / SREGISTER
COMMENT
Set output gain level
S589 [0..22], default=15
See Gain Table; S689 is affected, too
Set output overall gain (dBr)
S689 [-450..+215], default=0
See GainTable; value must be entered (and is
returned) multiplied by 10; S589 is affected, too
Set input gain level
S590 [0..22], default=15
See Gain Table; S690 is affected, too
Set input overall gain (dBr)
S690 [-450..+215], default=0
See GainTable; value must be entered (and is
returned) multiplied by 10; S590 is affected, too
Increment current output
gain level
AT+GOU
Error 57 may appear if maximum gain
level reached
Decrement current output
gain level
AT+GOD
Error 58 may appear if minimum gain
level reached
Query current output gain level
AT+GO?
Restore current output gain
level from S589
AT+GOR
Save current output gain
level to S589
AT+GOS
Increment current input
gain level
AT+GIU
Error 57 may appear if maximum gain
level reached
Decrement current input
gain level
AT+GID
Error 58 may appear if minimum gain
level reached
Query current input gain level
AT+GI?
Restore current input gain
level from S590
AT+GIR
Save current input gain
level to S590
AT+GIS
Table 3-4: Gain Settings AT Commands and S-Registers
