17
ECE
:
ECL port data Compression Enable (W10, R10).
ECE = 0:
Blocks the suppression of data < 1 for ECL port
readout. All 16 ADC values, with or without pedestal
subtraction, are sent sequentially to the ECL port.
Note:
The channel subaddress is not provided and the data
cannot be negative (minimum value 0).
ECE = 1:
Activates, after conversion, a data compression
cycle for ECL port readout; all data < 1 are eliminated. This
procedure takes 2.5
µ
sec. If there are no valid data, ECL
port readout will not take place and CAMAC readout will
automatically be enabled. In order to determine the origin of
data, a Header Word is identified by the 16th bit which
always = 1, and is composed of 8 VSN (Virtual Station
Number) Status Register bits and 4 WC (Word Count) bits
indicating the number of ADC channels to be read
(1 = 1 channel, ..., 15 = 15 channels, 0 = 16 channels).
EEN:
ECL port ENable (W11, R11).
EEN = 1:
Activates, after conversation, a data compression
cycle for ECL port readout; all data < 1 are eliminated. This
procedure takes 2.5
µ
sec. If there are no valid data, ECL
port readout will not take place and CAMAC readout will
automatically be enabled. In order to determine the origin of
data, a Header Word is sent as the first word and the
channel subaddress is included in the ADC data word. The
Header Word is identified by the 16th bit which always = 1,
and is composed of 8 VSN (Virtual Station Number) Status
Register bits and 4 WC (Word Count) bits indicating the
number of ADC Channels to be read (1=1 channel,
15=15 channels, 0=16 channels).
EEN = 0:
The ECL port readout is disabled, and CAMAC
readout is immediately enabled after a conversation. The
commands EPS and ECE are ignored.
EEN = 1:
Enables ECL port readout procedure. CAMAC
readout is enabled at the end of ECL port readout.
CPS:
CAMAC Pedestal Subtraction (W12, R12).
CPS = 1:
During CAMAC readout activates the subtraction
of pedestal (or offset) value of each ADC contained within
the Pedestal Memory.
CPS = 0:
No subtraction takes place.
CCE:
CAMAC data Compression Enable (W13,R13).
CCE = 0:
Disables data compression in CAMAC readout. All
16 ADC values, with or without pedestal subtraction, can be
read by CAMAC. The channel subaddress is not provided
and data cannot be negative (minimum value is 0).
Summary of Contents for 4300B
Page 22: ...25 Figure 1 3 FERA SYSTEM CONNECTIONS ...
Page 23: ...26 Figure 1 4 MODEL 4301 FERA DRIVER BLOCK DIAGRAM ...
Page 24: ...27 Figure 1 5 LOCALIZATION OF REMOVABLE RESISTORS AND VGND GND JUMPER ...
Page 34: ...38 Figure 2 1 MODEL 4300B BLOCK DIAGRAM ...
Page 35: ...39 Figure 2 2 CHARGE TO TIME CONVERTER BLOCK DIAGRAM AND TIMING ...
Page 36: ...40 Figure 2 3 TIME TO DIGITAL CONVERTER BLOCK DIAGRAM AND TIMING ...
