- SS-HQ1 Application Notes -
Ver.1.0.0 January 7, 2005
122
10.6.7. ME Shutter Speed and AGC Gain Setting
ME mode can be activated by setting AEME (CAT CAT14_Byte1_bit0) to 1[h]. In ME mode (short for "manual
exposure" mode), the shutter speed can be set with SHUTMAX, SHUTMIN, SHTSEL, and LLFLC. (See the
table "Setting the Shutter Speed.") The method for selecting the electronic shutter speed is the same as for
AESHUT mode, as described above.
Additionally, the gain for AGC can be set with AEREF and BLCOFF. (See the "Table 10.6-13 AGC Gain in ME
Mode.") The gain can be selected with AGCMAXL as selected in AGCMAX or from four scale values equally
dispersed between AGCMAXH and AGCMIN.
Table 10.6-13 AGC Gain in ME Mode
Parameter
Combinations of BLCOFF and AEREF
BLCOFF(CAT14_Byte1_bit2)
0 1 0 1
AEREF(CAT14_Byte1_bit3) 0 0 1 1
AGC gain (dB)
Approx. 5
Approx. 13
Approx. 22
Approx. 30
The AGC gain values of the above "Table 10.6-13 AGC Gain in ME Mode" are values when AGCMAX = FF[h]
and AGCMIN = 28[h].