| 1PPS | 1 PPS Output: Provides a one pulse per second TTL output synchronized to the time code output. |
| B | Parallel BCD Output: CMOS compatible, 5-volt logic in parallel four-line format is accessible through a rear-mounted D-sub connector. |
| Clear | Clear Anodized Front Panel |
| DC | DC Operation: Requires the unit to be powered from a DC source exclusively, typically +12 to +35 VDC. |
| ESE | ESE Time Code Output: An ESE Time Code output is provided allowing the unit to drive ESE Time Code Slaves. |
| HR | Relay Contact Closure: A contact closure occurs at the top of each Hour. Hour and 1/2 Hour closure may be ordered on some products. Relay contacts are rated at 10-Watts maximum load, 500mA maximum switching current. |
| J | 220 VAC/50 Hz Operation: The unit is configured to operate from 220 VAC line voltage. 117 VAC 50/60 Hz is standard. |
| RS | RS-232C Output: Computer Interface allows the time code data to be shared with a computer. |
| TTL | IRIG-B TTL Output: via panel mounted BNC connector |
| UL | "UL" Approved Power Supply: The unit is supplied with a UL/CSA approved wall mount power supply. |