VT102 User Guide| Chapter 10 | Contents | Appendix B |
This appendix lists the specifications of the VT102 terminal. Also included are X-ray emission statements, loopback connector wiring and related documentation not provided by DIGITAL.
| Dimensions | |
|---|---|
| Monitor | |
| Height | 36.83 cm (14.5 in) |
| Width | 45.72 cm (18 in) |
| Depth | 36.20 cm (14.25 in) |
| Keyboard | |
| Height | 8.89 cm (3.5 in) |
| Width | 45.72 cm (18 in) |
| Depth | 20.32 cm (8 in) |
| Minimum table depth | 51.4 cm (20.25 in) |
| Weight | |
| Operating | Temperature: 10° C to 40° C (50° F to 104° F) Relative humidity: 10% to 90% Maximum wet bulb: 28° C (82° F) Minimum dew point: 2° C (36° F) Altitude: 2.4 km (8000 ft) |
| Nonoperating | Temperature: -40° C to 66° C (-40° F to 151° F) Relative humidity: 0% to 95% Altitude: 9.1 km (30,000 ft) |
| Power | |
| Line voltage | 99 to 128 Vac (115 V setting) 198 to 256 Vac (230 V setting) 87 to 107 Vac (100 V setting) 222 to 268 Vac (250 V setting) Single phase, grounded, 3-wire |
| Line frequency | 47 to 63 Hz |
| Current | 0.70 Arms maximum at 115 Vrms 0.40 Arms maximum at 220-240 Vrms |
| Input power | 70 Wrms or 85 VA apparent |
| Current limiting | 1.25 A fuse (120 Vac) 0.75 A slow blow fuse (220-240 Vac) |
| Power cord | Detachable, 3-conductor grounded |
| Power cord receptacle | EIA specified CEE22-6A |
| Display | |
| CRT | 12-inch diagonal measure, P4 phosphor |
| Format | 24 lines × 80 characters or 24 lines × 132 characters (selected from keyboard or computer) |
| Character | 7 × 10 dot matrix with descenders |
| Character size | 3.35 mm × 2.0 mm (0.132 in × 0.078 in) in 80-column mode 3.35 mm × 1.3 mm (0.132 in × 0.051 in) in 132-column mode |
| Active display size | 203 mm × 127 mm (8 in × 5 in) |
| Character set | ASCII and UK displays 94 characters (with upper- and lowercase, numeric and punctuation), 32-character special graphics set |
| Cursor type | Blinking block character or blinking underline (selected from keyboard) |
| Keyboard | |
| General | 83-key detachable unit with 1.9 m (6 ft) coiled cord attached |
| Key layout | 65-key arrangement and sculpturing similar to standard typewriter keyboard with an 18-key numeric keypad |
| Numeric keypad | 18-key numeric pad with period, comma, minus, enter, and four general-purpose function keys |
| Visual indicators | Seven indicators: ON LINE, OFF LINE, KBD LOCKED, CTS, DSR, INSERT and one programmable indicator. |
| Audible signals | |
| Keyclick | Provides audible feedback for each keystroke (selected from keyboard) |
| Bell |
|
| Multiple bell | Sounds on error in SET-UP store or recall operation |
| Modem Communication | |
| Type | Full-duplex with/without modem control, asymmetric full-duplex, half-duplex supervisory and half-duplex with coded control |
| Speeds | 50, 75, 110 (two stop bits), 134.5, 150, 200, 300, 600, 1200, 1800, 2000, 2400, 3600, 4800, 9600, 19,200 baud (selected from keyboard) |
| Code | ASCII (ISO 646 and CCITT Alphabet 5) |
| Character format | Asynchronous |
| Character size | 7 or 8 bits (selected from keyboard) |
| Parity | Even, odd, mark, space or no space (selected from keyboard) |
| Buffer overflow prevention | Automatic generation of XON and XOFF control codes (selected from keyboard) |
| Echo | Local echo available (selected from keyboard) |
| Printer Communication | |
| Type | Full-duplex |
| Speeds | 50, 75, 110 (two stop bits), 134.5, 150, 200, 300, 600, 1200, 1800, 2000, 2400, 3600, 4800, 9600, 19,200 (one stop bits) baud (selected from keyboard) |
| Code | ASCII (ISO 646 and CCITT Alphabet 5) |
| Character format | Asynchronous |
| Character size | 7 or 8 bits (selected from keyboard) |
| Parity | Even, odd, mark, space or no space (selected from keyboard) |
| Buffer overflow prevention | Automatic generation of XON and XOFF control codes |
Composite Video Output (J9)
The composite video output provides RS170 output with the following
nominal characteristics. See Figure A-1.
| Output impedance | = | 75 ohms, dc-coupled |
| Sync level | = | 0 V |
| Black level | = | approximately 0.3 V with 75-ohm load |
| White level | = | approximately 1.0 V with 75-ohm load |
The composite sync waveform meets EIA RS170 standards.
The vertical interval is six equalizing pulses, six vertical sync pulses, and six more equalizing pulses. The timing is as follows.
| Equalizing pulse width | = | 2.3 µs ± 50 ns |
| Vertical pulse width | = | 27.28 µs ± 200 ns |
| Horizontal pulse width | = | 4.71 µs ± 50 ns |
| Horizontal blank width | = | 11.84 µs ± 50 ns, 80 column mode |
| = | 12.34 µs ± 50 ns, 132 column mode | |
| Front porch | = | 1.54 µs ± 50 ns |
FCC Notice
This equipment generates and uses radio frequency energy. It has been type tested and found to comply with the limits for a Class B computing device in accordance with the specifications in Subset J of part 15 of FCC rules, which are designed to provide reasonable protection against radio and television interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause interference to radio or television reception, the user is encouraged to try to correct the interference.
VDE Notice
RFI-suppressed according to German regulation 529/1970 and 227/1976 (VDE 0871 Class B).
| X-Ray Emission Data | |
|---|---|
| Rated anode voltage | 12 kV (fixed) |
| Dose rate | Less than 1.43 pA/kg (20 uR/h)* * Measured at a distance of 5 cm at any accessible point from the outer surface. |
Compliance with
|
|
| Workstation exposure | Does not expose operator to dangerous X-ray radiation. |
Loopback Connector Wiring
| From | To | |
| EIA | Pin 2 | Pins 3 and 15 |
| Pin 4 | Pins 5 and 8 | |
| Pin 20 | Pins 6 and 22 | |
| Pin 19 | Pins 12 and 17 | |
| 20 mA | Pin 1 | Pin 3 |
| Pin 2 | Pin 7 | |
| Pin 5 | Pin 8 |
Related Documentation