• Topic ID: id_15460794
  • Version: 3.0
  • Date: Dec 28, 2021 10:03:49 PM

Digital DASM II Settings and LEDs

1 GE Specific Jumper Settings

Figure 1. DASM Jumpers

2 GE Specific SCSI Settings

Figure 2. DASM Bottom, Showing SCSI Settings

3 DASM/LCAM Host Control Serial Link

RS232 serial host control interface, 25-pin D-type connector

  • pin 2 (TX)

  • pin 3 (RX)

  • pin 7 (GND)

A null modem cable may be required (reverses pins 2-3) between some cameras.

  • baud rate = 1200

  • start bits = 1

  • stop bits =1

  • parity = even

  • end of message = CR

  • protocol = ACK/NACK (3M M952)

4 DASM LEDs

DASM green LEDs viewed from front of DASM and air vents at bottom.


--------------------------------------------
                         o         o        o      o
                      PWR  CPU  SCSI  PIF
--------------------------------------------
DASM air inlet vents
------------------------------------------
        

  • PWR - on whenever DASM power applied (+5VDC)

  • CPU - flashes idle heartbeat at 1 CPS or indicates CPU activity

  • SCSI - flashes when OC and DASM communicate over the SCSIbus

  • PIF - flashes when the DASM and camera communicate over the serial port

5 DASM/LCAM Image Data Interface

RS422/RS485 8-bit digital image data interface, 37-pin D-type connector (3M M952 defacto industry standard digital interface).

  • pixels: 512

  • lines: 512

  • bits/pixel: 8

  • protocol: 3M M952

The gray scale reference bar option at the left of the filmed images is NOT supported by the digital filming interface.