CHAPTER ONE
E. J8 - IRIG B (AC)
This output is Amplitude Modulated IRIG B122 Serial Time Code. This output is
available only after the unit has tracked satellites and set time.
Carrier 1KHz
Modulation Ratio 3:1
Amplitude Three volts peak-to-peak on the Mark Pulse
Note: When enabled, the unit will output a modified IRIG B per IEEE Std. 1344
that has data in the Control Function bit area. Refer to Table One at the end
of this chapter for the Control Function Bit Assignments.
F. J9 - IRIG B (DC)
This output is Pulse Width Modulated IRIG B002 Serial Time Code at CMOS levels.
This output is available only after the unit has tracked satellites and set time
G. J11 – PRINTER OUTPUT PORT
This DB9 connector can output data to an RS232 compatible serial printer or
terminal.
It can be configured to operate in the Standard RS232 output or the One Second
RS232 ASCII Burst Mode output. For the operation and configurations, refer to
Chapters Three and Four.
H. OPTIONAL PULSE RATE OUTPUTS
The following is a list of optional pulse rate outputs available for selection on BNC
connectors J4-J9. They are positive (rising) edge on-time. The majority of these
rates have a 80/20 duty cycle with the exception of the 10MHz and the 5MHz which
are square waves, and the 1PPM which is 40/20.
10MHz 5MHz 1MHz
100KHz 10KHz/2PPH* 1KHz
100Hz 10Hz/1PPH* 1Hz
.1Hz 1PPM
Models ET6000 and ET6010 output 10KHz and 10Hz. Model ET6500 outputs
2PPH and 1PPH. For further clarification and/or configuration of the above outputs,
See Chapters Two and Three.
1-6 ET6xxx ExacTime GPS TC & FG (Rev C) Symmetricom Inc
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