SCM-594, CAMAC Dataway Display

[Download SCM-594 manual in PDF]

CAMAC Dataway Display and System Monitor is a low-cost, single-width diagnostic Dataway module with a visual display and programmable features. The module contains two 24-bit registers, designated as Read and Write registers, and a 20-bit Command register. Dataway signals are stored in the registers and displayed on the front panel. The registers may also be read-back onto the Dataway via CAMAC commands. The displayed dataway signals include : R1 through R24; W1 through W24; F1, F2, F4; F8, F16; A1, A2, A4, A8; N, B, I, Z, C, Q, X, P1, P2, S1 and S2.

There are five modes of operations: S1, NS1, QS1, DC, ID. The operation mode determines the method used to latch the Dataway signals into the 593′s registers. The modes are selected by the front-panel push-buttons or by the three-bit Control register. The current state of the control register is displayed on the front panel.

In mode S1, each pattern of Dataway signals is strobed into the module registers and is displayed irrespective of where the module is placed in the crate and without the module being addressed. In modes NS1 and QS1, Dataway signals are latched when the module is addressed or when Q is asserted. In the DC mode, the front panel displays the current state of the Dataway. In ID mode, the module responds only to commands addressed to the slot in which the module resides.

Interrupt routines can be tested using the LAM simulation facility. A LAM can be produced manually (if enabled) by the front panel push-button, by program control using the F(25) A(0) command, or by a TTL signal on INP front panel connector. In NS1 mode, the strobes are available on the L connector. The Write, Read and Command registers can be cleared by pressing the front-panel CLR pushbutton.

Features:

Full functionality at low cost
Separate display for Read and Write data
Comparison of Read and Write Dataway cycles
Command and Write registers read from CAMAC
Read back of previous Dataway operation for automated system testing
Five modes of Dataway monitoring
Clear push-button
LAM push-button and input for external LAM triggers
Panel markings for hex and octal
Dual purpose LED push-buttons