ES51961
3 3/4 MANU DMM
All package
p
p
p
0
1
0
1
0
1
range
digit3
digit2
p
p
p
p
p
p
0
0
1
1
0
1
1
0
0
1
1
digit1
digit0
function1
sataus2
0
function2
status1
p
p
0
1
0
1
CR
LF
Digit0~3 data is exactly the receiver display number, but the range,
function, status1, status2 data all need written program to judge what the data
mean. Note : LSB bit is sent first, then MSB bit.
The meter always outputs the current input value to the serial port in spite
of HOLD mode. Each block is repeated twice in one conversion cycle. The
detailed data format of each packet is listed below.
(1) RANGE:
Under frequency mode the output is as below:
Range Frequency
0110100 4 KHz
0110110 40 KHz
0110010 400 KHz
Range Frequency
0110000 4 MHz
0110001 40 MHz
0110011 400 MHz
Under the other mode (Logic, Voltage), the output is 0110100
(2) DIGIT0~3:
Digit
Digit
0110000
0110001
0110010
0110011
0110100
0
1
2
3
4
0110101
0110110
0110111
0111000
0111001
5
6
7
8
9
If the input value is overrange (OL), the reading data DIGIT3=4,
DIGIT2=0, DIGIT1=0, DIGIT0=0, but under the frequency mode, DIGIT0~
DIGIT3 output the measured value.
19
2006/1/24
CYRUSTEK [ Cyrustek corporation ]
