X2364 MANUAL
17
118044-001 REV E
CHARACTER
SENT
ASCII
CODE
COMMENTS
SOH 01
Start
of
Header
<CR> 0D
Carriage
Return
0 30
1 31
2 32
3 33
4 34
5 35
6 36
7 37
8 38
9 39
A 41
B 42
C 43
D 44
E 45
F 46
Q 51
R 52
S 53
V 56
USE
CAPITAL
LETTERS
TABLE 8.2 Relevant ASCII Codes
8.1.1 Signal Summary
The data interface receives and transmits digital data
packets between the Customer computer and the
Spellman power supply that represent the analog and
digital signals defined below:
Analog Control Signals sent from Customer Computer
to Spellman Power Supply:
1.
Voltage Control (0 – FFF hex represents 0-
60 kilovolts output)
2.
Current Control (0 – FFF hex represents 0-
15 milliamperes output)
Internal to the power supply interface, the D/A converters
have an analog output range of 0 to +10 volts DC, where
FFF hex represents full scale.
Digital Control Signals sent from Customer Computer
to Spellman Power Supply:
1.
X-ray On (0 = off, 1 = on)
2.
X-ray Off (0 = on, 1 = off)
(This function also provides reset)
Programming a digital control bit to a “1” will generate an
internal 250 millisecond pulse that will assert the desired
function.
Analog Monitor Signals sent from Spellman Power
Supply to Customer Computer:
3.
Voltage Monitor (0 – 3FF hex represents 0-
60 kilovolts output)
4.
Current Monitor (0 – 3FF hex represents 0-
15 milliamperes output)
Internal to the power supply interface, the A/D converters
have an analog input range of 0 to +5 volts DC, where
3FF hex represents full scale.
