Tektronix Waveform Monitors WFM700 Series Bedienungsanleitung PDF herunterladen (Seite 53)

Reference

3-4

WFM700 Series Waveform Monitors User Manual

Ancillary Data Display

The Ancillary Data display (see Figure 3--1) shows the raw (undecoded) data

words in the selected ancillary data packets. The ancillary data is shown only in

hexadecimal format. Since the display is updated at approximately 2-second

intervals, rapid data changes cannot be detected.

Use the DID and SDID/DBN soft keys in conjunction with the general purpose

knob to select the DID and/or SDID values for the type of ancillary data packet

to be monitored. DID and SDID values have the following characteristics:

H DID and SDID values range between 0x01 and 0xff.

H For DID values in the range 0x00 -- 0x7F (Type 2 packets), the SDID values

are used.

H For DID values in the range 0x80 -- 0xFF (Type 1 packets), there are no

SDID values used (the SDID soft key is greyed out).

Table 3--1 lists the DID and SDID values that are defined for common types of

ancillary data.

Figure 3- 1: Ancillary Data display

1 2 ... 48 49 50 51 52 53 54 55 56 57 58 ... 101 102

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Tektronix Waveform Monitors WFM700 Series Bedienungsanleitung Seite 53