MAC-TAC-GPS/MAC-TAC-WWVB · Large-digit, self-adjusting real-time clock
Discontinued. No longer sold; its specifications and documents stay here for systems still in service.
MAC-TAC-GPS is a large-digit, self-adjusting real-time clock for high visibility, unattended operation. Its GPS receiver sets the time from the satellites and keeps it within a tenth of a second; it adjusts itself for daylight saving time, and its internal battery keeps time through a power loss.
The surviving spec sheet, marked preliminary, covers MAC-TAC-GPS.
Overview
Key features
- Synchronizes automatically via the Global Positioning System (GPS)
- Unattended operation
- Maintains time without power
- Battery backup
- Industrial housing for increased durability
- Designed for easy installation and replacement
- Adjusts automatically for daylight saving time
- 3″ high digits for maximum visibility
Applications
- Trains
- Buses
- Wayside terminals
- Airports
- Schools
- Hospitals
- Auditoriums
Specifications
| System | |
|---|---|
| Display | Four 7-segment digits, 3″ high, green (-G) or red (-R); 12-hour time |
| Time synchronization | GPS, up to twice an hour; automatic daylight saving time |
| Accuracy | 0.1 second |
| Battery backup | 9 V alkaline, keeps time for one year without power |
| Physical | |
| Power | 9 to 28 VDC, locking circular connector |
| Dimensions | Clock: 13″ W × 5.5″ H × 1.7″ D, painted steel. Antenna: 1.69″ W × 2″ H × 0.75″ D, ABS plastic |
From the unit’s documents below.
Documents
| Document | Content | Format |
|---|---|---|
| Spec sheet | Specifications |
Related models: Clocks
| MAC-TAC-GPS/MAC-TAC-WWVB | Large-digit, self-adjusting real-time clock | This page |
|---|