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Ixia IRIG-B Auxiliary Function Device (AFD2)

IXIA AFD2 Specifications

15-10

Ixia Platform Reference Manual Manual, Release 6.30

15

IRIG-B Functionality

Bit rate is 100 pps and frame rate is 1fps for both 
code formats. 1pps pulse provides the precise time 
refrence.

IRIGB000

DC level shift, pulse width coded with BCD, 
CF(control functions), SBS

IRIGB120

1kHz carrier sine wave amplitude modulated with 
BCD, CF (control functions), SBS

Clock

12.5 Mhz GPS System clock

Pulse Width

80 ns

Rear Panel Switches

Reset switch

Front Panel Indicators

USB, 1PPS, Pwr OK, Lock

Front Panel Connectors

USB Port

Type B

Sync Out

RJ14

Back Panel Connectors

IRIG-in

BNC, IRIG-B code in

1PPS-in

BNC, 1PPS pulse in

Power

(not used) 2.0mm Power jack

Table 15-4. Ixia AFD2 Specifications

Summary of Contents for AFD2

Page 1: ...IA AFD2 with integrated IRIG B is designed to provide 12 5 MHz GPS clock with a programmable 80 ns sync pulse to the Optixia chassis The Ixia AFD2 IRIG B receiver is controlled by an Ixia chassis thro...

Page 2: ...y latency measurements by subtraction of the transmit time stamp from the receive time stamp For large or very remote chassis chains the chassis chain properties provide an offset delay This delay is...

Page 3: ...e Source Synchronous IRIG B AFD2 IRIG B Mode B000 B000 is straight TTL serial output from the IRIG B receiver B120 B120 is amplitude modulation AM from the IRIG B receiver IRIG B Status Lock Status Lo...

Page 4: ...n of IRIG B as the timer source the IRIG B status is displayed In Figure 15 3 on page 15 3 the status is locked to the 1PPS signal coming from the IRIG B receiver In the chassis tree view of IxExplore...

Page 5: ...fore Attaching AFD2 Changing Time Source Any time the clock source is switched IxServer must be restarted When the chassis is switched from Synchronous time source to IRIG B or vice versa the followin...

Page 6: ...e there is no IRIG B information and the status is Unlocked in the Time Sources tab of Chassis Properties in IxExplorer Figure 15 3 on page 15 3 then one of the following conditions needs to be correc...

Page 7: ...d by one or more Ixia software users located likewise anywhere in the world Where IRIG B and CDMA sources are used all of the sources must have good quality time values in order for the trigger to be...

Page 8: ...B Tb Time Absolute T Time Error at any site Terr Lab Ta T1 Tb Lba Tb T2 Ta Delta L Lab Lba Delta L Ta T1 Tb Tb T2 Ta Delta L T1 T2 2 Ta Tb Delta L 2 Ta Tb If Ta T Terr and Tb T Terr Then Delta L 2 T...

Page 9: ...nd heartbeat is being generated by the IRIG B hardware Pwr OK Green The AFD2 power has been validated Lock Green Indicates that the internal PLL has locked to the 1PPS signal Testing is invalidated if...

Page 10: ...level shift pulse width coded with BCD CF control functions SBS IRIGB120 1kHz carrier sine wave amplitude modulated with BCD CF control functions SBS Clock 12 5 Mhz GPS System clock Pulse Width 80 ns...

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