Product Description

The SLG 1420 is a single width CAMAC module which can be used as a LAM grader in serial systems but which may also be used in parallel systems with a suitable cross–connected cable. The module implements all the LAM encoder functions of the minimum Serial LAM Grader set as defined in Appendix A of ESONE/SD/02, ”Recommendations for CAMAC Serial Highway Drivers and LAM Graders for the SCC–L2”.

In addition to the minimum set the module also provides the following features:–

• An internal 24 bit LAM status register that can be overwritten, enabled, and disabled. When enabled, the contents of the register rather than the external LAM pattern (L1–L24) is gated with the LAM mask to form the LAM Request.
  Initialise disables this register.
• An initialise command (F25,A15) performs the same function as dataway Z.
• It is possible to select LAM 24 as highest priority encoded as SGL=0. It is also possible to select the action whereby LAM mask bit 0 acts as LAM mask bit 24. LAM 24 can then be set and cleared by F20,A13 and F22,A13 respectively with data equal to zero. In this mode LAMs 1–23 are encoded normally.
• Certain registers may br read:–
  LAM status register – the internal status register if enabled or the staticised LAM pattern if disabled.
  LAM mak register.
  LAM request register.

Temperature Range

0 to 50 degrees Celsius.

Power Requirements

+6V at 1.2 amps from the mandatory power supply.

Front Panel Indicators

Internal LAM	Green LED illuminates when internal LAM is set.
Demand	Red LED illuminates when LAM is present.
Selected	Red LED illuminates when module is addressed.

Front Panel Connectors & Push button

LAM Output	Standard Lemo socket. Open collector with/without pull-up to +5v. Asserted LOW when LAM set.
Trig LAM	Standard LEMO socket. Positive TTL transition sets LAM. Fitted with pull-up tp +5v.
Set LAM	Push button, sets internal LAM for test purposes.