126
Hardware Configuration Reference
irigOperatingMode
Syntax
irigOperatingMode:
enum
enum
= {Decode, Freerun, 1PPS, RealtimeClock, DigitalSync, GPSOnboard,
GPSinAntenna}
Description
Specifies the method used by the time and frequency processor (TFP) to determine the time
reference.
•
Decode
means the TFP decodes the IRIG timecode signal on its front panel connector to
generate time values. The TFP locks its crystal oscillator to the input code rate. If the
input code becomes unavailable, the TFP continues using the "flywheel" method running
at the last known code rate. See Datum documentation for more information.
Decode type is specified with the
command.
•
Freerun
means the TFP generates time values using the clock specified with the
•
1PPS
means the TFP synchronizes to the signal on the 1PPS front panel input (pin 14 of
J1).
•
RealtimeClock
means the TFP synchronizes to the onboard real time clock (RTC) that is
battery-backed. This mode is not recommended when a crystal oven is installed because
the RTC accuracy is less than that of the oscillator.
•
GPSOnboard
is not currently supported.
•
GPSinAntenna
means the TFP uses a global positioning system signal to generate time
values (receiver at antenna). The GPS is available separately.
Note
This selection is ignored when
systemClock
.
Example
timeReference: vxiIRIG
irigModel: bc350vxi
irigInterfaceParm: 200
irigOperatingMode
:
Decode
irigTimeCodeFormat: IRIGB
irigTimeCodeModulation: AM
irigClock: Internal
irigSecondsFromGMT: 0
irigCableDelay: 0
Summary of Contents for E3238S
Page 62: ...62 Hardware Installation ...
Page 94: ...94 Software Installation and Configuration ...
Page 198: ...198 Application Resources ...
Page 218: ...218 Multi Channel Hardware Installation ...
Page 242: ...242 Specifications ...
Page 252: ...252 Appendix A d E3238s Listing E3238S Installation ...
Page 268: ...268 Appendix B d e3238s cfg Listing E3238S Installation ...