MODEL V 262

MULTIPURPOSE I/0 REGISTER

Data Sheet

FEATURES

One unit wide VME module.
A24 D16 VME slave protocol.
4 NIM level signal INPUTS.
4 NIM level signal OUTPUTS.
4 NIM pulse OUTPUTS.
16 ECL differential OUTPUTS.
Data space addressing in SUPERVISOR or USER mode.
Module's base address settable through internal rotary switches.

DESCRIPTION

The Model V 262 is a multipurpose I/O register housed in a 1-unit wide VME module.

Input signals are received through four front-panel Lemo 00 type connectors, terminated in 50 Ohm impedance, and are converted from NIM to TTL level before being stored into the NIM LEVEL REGISTER.
It is possible to read the NIM LEVEL REGISTER content by performing a READ cycle via VME.

Outputs can be:

4 NIM pulses. They are generated by performing a WRITE cycle at the BASE + H08 address. This operation stores data into the NIM PULSE OUTPUT REGISTER. Before going to the 4 Lemo 00 type output connectors, data are converted from TTL to NIM level.
4 NIM signals.They are generated by performing a WRITE cycle at the BASE + H06 address. This operation stores data into the NIM SIGNAL OUTPUT REGISTER. Before going to the 4 Lemo 00 type output connectors, data are converted from TTL to NIM level.
16 ECL differential signals. They are generated by performing a WRITE cycle at the BASE + H04 address. This operation stores data into the ECL SIGNAL OUTPUT REGISTER. Before going to the 34 pin output connector, data are converted from TTL to ECL level.

The Module operates in A24 D16 mode. The module's base address must be set through 4 rotary switches housed on the piggy-back module plugged into the printed-circuit board.

(This Model is a CEA - IRF SACLAY design).

SPECIFICATIONS

CONNECTORS:

4, Lemo 00 type, 50 Ohm impedance. NIM signal INPUTS.
4, Lemo 00 type. NIM signal OUTPUTS.
4, Lemo 00 type. NIM pulse OUTPUTS.
1, DIN 34 pins. ECL differential OUTPUTS.
1, DIN 96 pins. VME BUS.

DISPLAYS:

4, LEDs signalling each NIM input signal.
4, LEDs signalling each NIM output signal.
4, LEDs signalling each NIM output pulse.
16, LEDs signalling each ECL differential output.
1, LED signalling the DTACK signal emission.

SIGNALS:

INPUTS: standard NIM levels.

OUTPUTS:
(4) standard NIM levels.
(4) standard NIM pulses: 120 ns. Fall time: 7.6 ns. Rise time: 4.8 ns.
(16) standard ECL levels.

POWER REQUIREMENTS:

-12 V 0.7 A
+5 V 1 A

Costruzioni Apparecchiature Elettroniche Nucleari S.p.A.
Via Vetraia, 11
I-55049 Viareggio, ITALY
Telephone +39 584 388 398
Fax +39 584 388 959
E-mail: INFO@CAEN.IT

G.M.G. 30th April, 1996