Work Day 22nd July 2017 (Part 2)

Simulator
The simulator was run up and gave errors, including a disk error. A reboot got the simulator running but the Argus’s SCSI tape controller gave an unusual indication in that four red LED’s were on rather than a single LED which is the normal status during operation. The photobelow  shows the Argus’s tape controller (single LED on), tape drive and SCSI 2 disk emulator. These ‘faults’ were resolved by Pete M who re seated the connectors on the SCSI ribbon cable. The simulator has now returned to a serviceable and reliable condition.

Argus CF Card in Rack wm.jpg

Pete M ran an exercise to check the operation of the T86 against a to non-coherent CW jammer. This accompanying photo shows the Jamming and Assessment display for such a jammer. This experiment will be reported separately.

Radar Display Non Coherent Jammer wm.jpg

Testing of Serial Cards in LCP
Two Dual High Speed Serial I/F cards have been held as U/S since being acquired, both confirmed as U/S when fitted to the LCP. These cards have a number of devices that are socketed on the PCB so these were removed in the workshop and sockets cleaned. Re testing the cards yesterday in the LCP proved that one is now serviceable and one still U/S. Further reports will cover the repair of the U/S card. An accompanying photo shows the computer racks and the serial interface cards are located in the chassis, second from the bottom of the rack nearest the door.

LCP Computer Racks wm.jpg

In the Workshop
Away from the LCP additional serviceable spares are being created and in the past week two Farnell 5V 60A power supplies have been refurbished and added to our spares stock. See accompanying photo. There are a total of fourteen Farnell G series power supplies used in the computer racks and display console.
Farnell 5V 60A PS wm.jpg

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