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User's Manual (MUT)
Mod. N568B/LC 16 Ch Spectroscopy Amplifiers
26/01/2007
4
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Page:
N568B_N568LC_REV4.DOC
37
18
AA Offset
N568 NNN
where AA is the selected address number. By pressing the key "#" the blinking toggles from the
position of the blinking field in the previous page to the following at its right. By pressing the key "#"
the blinking toggles to the Offset (Offset adjustment) field in the display (NNN in the figure above): by
pressing "0" or "1" it is possible respectively to decrement/increment the value of the Offset adj. by 1,
while by pressing "4" or "7" it is possible respectively to decrement/increment the value of the Offset
adj. by 10 (allowed Offset adj. values: 0 to 255). The Offset is the same for all Channels.
By pressing the "PAGE" key, the display will appear as follows:
AA Mux Out
N568 XXXXXXXX
where AA is the selected address number. By pressing the key "#" the blinking toggles from the
position of the blinking field in the previous page to the following at its right. By pressing the key
"ENTER" it is possible to disable or enable the Multiplexed Outputs. The status of the Multiplexed
Outputs will appear in the XXXXXXXX field ("Disabled" or "Enabled").
4.2 USING THE H. S. CAENET VME CONTROLLER
The Mod. N568B/LC can be controlled remotely via VME through the Mod. V 288 H. S. CAENET VME
Controller.
The Model V288 has been designed to control an H. S. CAENET node through the VME bus. It is
composed of a collection of registers, for the operation control, and two memory buffers for the
transmitted and received data packets, arranged in a FIFO logic 16 bit wide 256 words deep. In the
memory buffer for the received data are also stored the error messages generated by the V288 itself
when the H. S. CAENET operation has failed.
Standard VME cycles allow the User to perform the required control and setting operations on each
Mod. N568B/LC in the network, according to the typical MASTER/SLAVE communication protocol,
where the VME controller assumes the MASTER function. The module's operations can be software
controlled in polling mode or can be handled via interrupt facility. It houses a VME ROAK
INTERRUPTER that generates a VME interrupt (if enabled) as soon as the data packet (or the error
message) is stored in the receive buffer.
The Registers of the Mod. V288 are described in the Table 4.1.