User`s guide

APDCAM User’s Guide
Page 25/32
Parameter R/W
Offset
(byte)
Size
(byte)
Value
after start
Description
BOARD_VERSION R 0 1
factory
Board version code.
MC_VERSION R 2 2
factory
Microcontroller program version code.
BIAS_MONITOR R 4 2
actual
The measured detector bias voltage.
The conversion factor is 0.12V/digit.
TEMP_ADC R 12 8
actual
The temperature of the 4 ADC blocks.
(2 bytes each in 0.1 ºC units.)
TEMP_DETECTOR R 20 2
actual
The temperature of the detector in 0.1 ºC units.
TEMP_ANALOG R 22 2
actual
The temperature of the analog amplifier in 0.1
ºC units.
TEMP_DETHOUSE R 24 2
actual
The temperature of the detector housing in 0.1
ºC units.
TEMP_PELTIER R 26 2
actual
The temperature of the Peltier cooler/heater
heatsink in 0.1 ºC units.
TEMP_CONTROL R 28 2
actual
The temperature of the Control unit heatsink in
0.1 ºC units.
TEMP_BASE R 30 2
actual
The temperature of APDCAM baseplate in 0.1
ºC units.
TEMP_DAQ R 40 2
actual
The temperature of the DAQ unit FPGA in 0.1
ºC units.
PELTIER_OUT R 44 2
actual
Signed 2-s complement 16 bit value represent-
ing the status of the Peltier cooler/heater. Nega-
tive values mean cooling, positive heating. The
maximum is about 4000.
PID_P R/W 80 2
EEPROM
Weights of the P, I and D components of the
detector temperature controller.
PID_I R/W 82 2
EEPROM
PID_D R/W 82 2
EEPROM
BIAS_SET R/W 86 2
EEPROM
The set value of the detector bias voltage. The
conversion factor is 0.12V/digit.
BIAS_ON R/W 94 1
0
Bit 0 switches on the detector bias voltage. The
bias voltage should be enabled first in
BIAS_ENABLE.
BIAS_ENABLE W 96 1
0
A hex $AB (decimal 171) should be written
into this register to enable detector bias voltage.
DET_TEMP_SET R/W 106 2
EEPROM
The detector temperature set value. This is the
reference for the Peltier PID controller. (0.1 ºC
units.)
FAN_PELTIER R 108 1
actual
The actual speed of the fan cooling the Peltier
heatsink (range 0...255).
FAN_ELECTRONICS R 110 1
actual
The speed of the fan cooling the electronics
(except DAQ) (range 0...255).
FAN_DAQ_DET R 112 1
actual
The speed of the fan cooling the DAQ and the
detector shielding (range 0...255).
CALIB_LIGHT R/W 122 2
EEPROM
The current of the calibration LED. (valid:
0...4095). 0 means no light.
Table 8. Register map of the Control unit, part one.