Gentec-EO MAESTRO - Manual (Page 59)

MAESTRO User’s Manual Revision 8.1 58
3.4.2 MAESTRO Binary Mode Description
3.4.2.1 Description
The MAESTRO has two Communication Modes: the Binary Mode for FAST data acquisition and the
ASCII mode. The resolution is 14 bits for both cases.
Only the joulemeters support the binary mode. Thermopiles in energy mode, thermal heads in standard
mode and photodiodes are coded in ASCII. To select the binary mode select Home/Set Device/Serial
Commands/ Serial Binary Measurement. If you wish the MAESTRO to remember this setting, touch the
Set as Default button.
The value in binary mode is coded in two bytes.
Binary Joulemeter MODE
Byte #1
O Y X X X X X X
Byte #2
O X X X X X X X
B = The sign.
Y = The MSB for the Wattmeter Mode.
X = Bits of the Codification.
FOR ALL MODES
O = Order
0 = First byte (MSB)
1 = Second Byte
3.4.2.2 Codification
Measurement in Joule = Current Scale *Value in Decimal/16382
Example 1:
For 151 mJ on the 300 mJ scale on Channel 1
The MAESTRO will send you: 40B6 HEX VALUE, where:
10 = 0 1000000
The first second bit (0) is the order of the MSB
1000000 is the MSB of the codification
9B =10110110
The first bit (1) is for the order so this is the LSB of the codification
The Total Codification is 10000000110110, which is 8246 in decimal (8246/16382 * 300mW =
151.007 mW)
The codification 11111111111111 = No connector
The codification 11111111111110 = OUT detected