Summary

13" CRT intended for use the IBM PC, Apple III, or other 8-16bit digital RGB microcomputers. It also features a composite loop-back input.

A sister model, the CT-1300D, has an analog RGB input on the back instead of digital RGB.

Manuals & Promo Materials

• Service Manual

Notes

The front panel has an adjustment for horizontal centering that works for both the composite and digital-RGB inputs. The rear has adjustments for horizontal hold, vertical size, and vertical hold.

The pinout for the EIA connector on the back is shown in the gallery below (from the service manual). From my testing, connecting regular analog RGBS to any combination of these pins did not work.

RGB

Internally the CT-1300D and DT-D1300D models are quite similar, to the point where they share the same service manual. The main difference is that the DT has an extra board for converting digital RGB to analog. Theoretically the DT should be modifiable to accept analog RGB input - but I was unable to get it working correctly. Despite my best efforts to match the DT circuits to the CT's, the white pedestal was not correct at all in RGB mode. White would be showing as near-black. The Panasonic AN5352 inside is definitely capable of regular analog RGB because its used in the Commodore 1080 and 1084 monitors for the RGB processing. However their RGB input circuits are very different from the one used in the CT-1300D.