Sony CVM-1225 Trinitron color monitor/receiver, 1975
Input/output panel full of obsolete connectors.
Antenna terminals are of the old-fashioned 300-ohm type instead of the familiar 75-ohm F-connector.
Video inputs and outputs are UHF-style, long since superseded by the more compact BNC connector.
The familiar mini-plug, in monaural form, does audio duty. Nowadays, RCAs are the norm.
The connector to the left of the power cord allowed a Sony U-Matic (3/4") videocassette recorder to be connected to the monitor with a single cable handling both audio and video, a nifty concept that was ultimately abandoned in the name of flexibility.
The knobs on top controlled brightness as well as vertical hold, an adjustment that stopped the picture from rolling vertically due to drifting synchronization circuits. A vertical hold control was practically a necessity back in the vacuum-tube days, then incorporated—but rarely tinkered with—in solid-state sets like this one, and is now but a memory to older generations brought up on fiddly TV sets.
Sony CVM-1225 Trinitron color monitor/receiver, 1975
Input/output panel full of obsolete connectors.
Antenna terminals are of the old-fashioned 300-ohm type instead of the familiar 75-ohm F-connector.
Video inputs and outputs are UHF-style, long since superseded by the more compact BNC connector.
The familiar mini-plug, in monaural form, does audio duty. Nowadays, RCAs are the norm.
The connector to the left of the power cord allowed a Sony U-Matic (3/4") videocassette recorder to be connected to the monitor with a single cable handling both audio and video, a nifty concept that was ultimately abandoned in the name of flexibility.
The knobs on top controlled brightness as well as vertical hold, an adjustment that stopped the picture from rolling vertically due to drifting synchronization circuits. A vertical hold control was practically a necessity back in the vacuum-tube days, then incorporated—but rarely tinkered with—in solid-state sets like this one, and is now but a memory to older generations brought up on fiddly TV sets.