Technical Manual Version 002
BRUKER BIOSPIN
39 (55)
Authorised functions
P2 - Port 2 (for test only)
4.8.12
The power level applied to the LN
2
evaporator is set by an analog control signal
delivered by a 8 bit DAC (Digital to Analog Converter). Port 2 provides the bits for
LN
2
control DAC :
Table 4.7.
Port 2 definition
Write
Read
BIT
NAME
FUNCTION
0
1LN
2
DAC bit 0
1
2LN
2
DAC bit 1
2
3LN
2
DAC bit 2
3
4LN
2
DAC bit 3
4
5LN
2
DAC bit 4
5
6LN
2
DAC bit 5
6
7LN
2
DAC bit 6
7
8LN
2
DAC bit 7
Syntax :
EOT 0 0 0 0 STX
P2
AB
ETX BCC
Response :
ACK
Description :
Allows direct write access to port 2.
Rules :
The first character represents the state of port 2 bits 4 to 7.
The second character represents the state of the bits 0 to 3.
The characters are hexadecimal.
Syntax :
EOT 0 0 0 0
P2
ENQ
Response :
STX
P2
> ABCD ETX BCC
Description :
Allows direct read access to port 2.
Rules :
A and B are always «0». The third character represents the
state of port 2 bits 4 to 7. The fourth character represents the
state of the bits 0 to 3. All the characters are hexadecimal.
Summary of Contents for NMR BVT3200
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