BIRD IQC5000B - Markers; Timing

IQC 5000B Operation Manual
35
Table 19 - IQC5000 Supported Playback Acquisition Bandwidth- Anritsu
I/Q Sampling Rate
(Sp
s)
Data Rate
(Bytes/s)
Anritsu
Recording Spans
(H
z)
200,000,000 down to
31,250,000 in any strip
supported but the spectrum
analyzer
4x IQ Sampling
Ra
te
1
10,000,000 down to
25,000,000
25,000,000 100,000,000 20,000,000
23,040,000 92,160,000 18,000,000
15,360,000 61,440,000 12,000,000
12,500,000 50,000,000 10,000,000
7,680,000 30,720,000 6,000,000
6,250,000 25,000,000 5,000,000
3,840,000 15,360,000 3,000,000
3,125,000 12,500,000 2,500,000
1,920,000 7,680,000 1,500,000
1,562,500 6,250,000 1,250,000
Markers
The IQC5000 supports time- and location-stamping recordings, using markers to correlate the time and location
(location is only available if GPS is connected and valid) to a specific sample in the recording. A time (and location, if
GPS is connected and valid) will automatically be assigned to the beginning and end of the recording.
To mark data, attach a TTL-level trigger source to the Marker 1 or Mark
e
r 2 inputs on the rear of the IQC5000;
alternatively, press the MARK button on the front panel of the IQC5000. A marker will be placed in the recording’s
.xmrk file that will correspond to the time/location and sample point on the trigger rising edge, falling edge, or both
– this is configurable in IQC Control (see "Setting up Markers" on page 56) and the API. The re-arm time for markers
is 1ms; the marker rate is effect
i
vely 1,000 markers per second. See The "The xmrk Marker File" on page 67 for
information about the marker file format.
Timing
The IQC5000 follows a hierarchy when choosing which time source to use:
Table 20 - IQC5000 Timing Hierarchy
Priority Time Source Description
1 IRIG-B Most precise method of time-stamping
2 NMEA-GPS If IRIG-B signal is not present, use NMEA time if att
ached and valid
3 Workstation Time Used for IQC Control soft
ware UI or API recordings only, if IRIG-B or
NMEA GPS signals are not present
Note: An external time source must be used when using Time of Day record triggers.