108 sculptured keys with matte finish
Available in 16 language dialects and 15 word processing versions, including English. Three French language keyboards.
2 keyboard indicators:
 |
Hold |
 |
Lock |
This appendix lists the specifications for the worldwide version of the VT420 video terminal.
| VT420 Terminal | (Approximate Size) | |
|---|---|---|
| Height | 282 mm | (11.1 in) |
| Width | 320 mm | (12.6 in) |
| Depth | 331 mm | (13.1 in) |
| Weight | 8 kg | (17.5 lb) |
| Tilt-swivel | 60 degrees | |
| Adjustable tilt | +5 to -20 degrees | |
| LK401 Keyboard | (Approximate Size) | |
|---|---|---|
| Height | 45 mm | (1.75 in) |
| Width | 478 mm | (18.8 in) |
| Depth | 191 mm | (7.5 in) |
| Weight | 1.4 kg | (3.1 lb) |
| Temperature | 10° to 40° C (50° to 104° F) |
| Relative humidity | 10% to 90% relative humidity wih a maximum wet bulb of 280° C and a minimum dew point of 2° C |
| Altitude | 2400 m (8000 ft) maximum |
| AC input | No selection required. 100 to 240 V nominal, single-phase, 2-wire plus safety earth ground, 88 to 264 Vrms preset voltage |
| Line frequency | 50 to 60 Hz nominal |
| Input power | 67 watts |
| Power cord | North American: Rated 125 V, listed, type SJT/SVT, 18 AWG-3 wire All others: Rated 250 V, "HAR" cordage, 0.75 mm² |
| Active video area | (approximate size) |
| Horizontal | 232 mm (9.04 in) |
| Vertical | 168 mm (6.55 in) |
| Format | 24, 36, or 48 lines of 80 or 132 characters |
| Built-in character sets | DEC Multinational character set U.S. ASCII DEC Supplemental ISO Latin Alphabet No. 1 ISO Latin-1 Supplemental DEC Special Graphics DEC Technical 11 National replacement character sets |
| Video attributes | Normal, bold, underline, blinking, and negative image (reverse video) -- selected individually or in combination |
| Text cursor | Blinking or steady block or underline |
| Frame rate | 70 Hz (60 Hz optimal) |
| Antiglare | Integral with CRT |
| General | |||||
|---|---|---|---|---|---|
| General | 108 sculptured keys with matte finish Available in 16 language dialects and 15 word processing versions, including English. Three French language keyboards. |
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| Cord | 1.8 (6 ft) coiled cord with a 4-pin telephone-type modular connector | ||||
| Indicator lights | 2 keyboard indicators:
|
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| Keys | (Approximate Size) |
|---|---|
| Home row | 30 mm (1.18 in) above desktop |
| Key size | 13 mm (0.50 in) square |
| Key spacing | 19 mm (0.75 in) center to center (for single-width keys) |
| Numeric keypad | 18 keys |
| Function keys | 5 predefined keys, 15 user-definable keys |
| Audible Indicators | |
|---|---|
| Keyclick | Sounds after each keystroke. |
| Margin bell | Rings once when cursor approaches right margin. |
| Warning bell | Rings once for compose errors. Rings twice for errors in set-up. Rings once upon receipt of Ctrl G. |