Options - Option F01 Four Configurable Outputs

Summary Information

Adds four more individually-buffered BNC outputs, jumper-selectable to any signal available on the clock Main Board.

Full Description

Order number F01 adds four rear-panel outputs, which may be configured to any available signal in the 1202B/C clock. The configuration of the four outputs can be changed at any time via internal jumper settings.

Specifications

General

• Output Connectors: BNC-type RF connectors (4).
• Default Configuration: The two BNC connectors on the right¹ are modulated IRIG-B and the two BNC connectors on the left¹ are unmodulated IRIG-B.

¹ When looking at the rear panel from the back of the clock.

Analog Outputs

• Output Type Operational amplifier (LF353) output, with 557-ohm series resistor.
• Available Outputs: Note: All outputs available on clock model, as noted.
• IRIG-B, Modulated: IRIG format B time code, modulated onto 1 kHz 10 Vpp sinewave carrier. 
• Deviation: ± 5 volts analog, corresponding to 1-PPS deviation channel A or B (see individual clock Operation Manual). The proportion is 1 V per 10-μs deviation (± 50 μs full scale).

Digital Outputs

• Output Type: High-Speed CMOS (74HC126), 0 V to 5 V, with 47 ohm series resistance.
• Available Output: Note: All outputs available from the clock model, as noted.
• IRIG-B: IRIG format B time code (unmodulated).
• 1 MPPS: 1,000,000-PPS square wave, synchronous to the 1-PPS output.
• 1 PPH: 1 pulse per hour, rising edge on time.
• 1 PPS: (10 ms “high”), synchronous to 1 PPS/GPS.
• Programmable:

  Available signals:

  • IRIG-B unmodulated (UTC/Local, C37.118.1 On/Off. Settings are independent from main IRIG-B signal.)
  • Every 1 second to 60,000 seconds, starts top of the second
  • Hourly at a specified offset
  • Daily at a specified time of day
  • One shot at a specified time of year
  • Slow Code (UTC/LCL)
  • DCF-77

• Out-of-Lock: Normally “HI” after acquisition of satellite signals. Toggles “LO” nn minutes after loss of satellite signal lock. Range for “nn” is 00 minutes to 99 minutes, and is set using the SETUP menu or RS-232C (refer to clock Operation Manual). Setting of 00 disables this function (output remains “HI”). This output follows the standard “Out-of-Lock” function on the clock.
• IRIG-B (Modified Manchester): IRIG format “B” time code, Manchester encoded with 1-kPPS carrier,
  and data transitions on time mark.

 

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