Sundance SMT943 - Manual (Page 40)

User Manual SMT943 Page 40 of 54 Last Edited: 23/08/2011 17:24:00
8 ‘1000’ 64Meg
9 ‘1001’ 128Meg
10 ‘1010’ 256Meg
11 ‘1011’ 512Meg
Setting Bit 15:12 Description Gain ChB (Common).
0 ‘0000’ 0dB gain
1 ‘0001’ 0.5dB gain
2 ‘0010’ 1.0dB gain
3 ‘0011’ 1.5dB gain
4 ‘0100’ 2.0dB gain
5 ‘0101’ 2.5dB gain
6 ‘0110’ 3.0dB gain
7 ‘0111’ 3.5dB gain
8 ‘1000’ 4.0dB gain
9 ‘1001’ 4.5dB gain
10 ‘1010’ 5.0dB gain
11 ‘1011’ 5.5dB gain
12 ‘1100’ 6.0dB gain
ADC Chab Register 8 0x38.
ADC Chab Register 8 0x38
Byte Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0 Reserved Fine Gain Adjustment ChB
Default ‘0’ ‘0000000’
1 Reserved Test Patterns ChB
Default ‘00000’ ‘000’
ADC Chab Register 8 0x38
Setting Bit 6:0 Description Fine Gain ChB.
0 128 steps for a range of 0.134dB
Setting Bit 10:8 Description Test Patterns ChB
0 ‘000’ Normal Mode of Operation
1 ‘001’ Outputs all zeroes
2 ‘010’ Outputs all ones
3 ‘011’ Outputs toggle pattern (0x1555 and 0x2AAA)
4 ‘100’ Outputs digital ramp (0->16383)
5 ‘101’ Outputs custom pattern
ADC Chab Register 9 0x39.