Fluke 54200, User Manual

Page: 168 / 386

54200
Users Manual
5-26
VPS Description
Exact information on the design and contents of VPS can be obtained from the
ARD/ZDF Technical Guideline No. 8R2 'Video-Programm-System (VPS)'.
A general overview is given below:
VPS is similar to PDC. The main difference is that VPS is transmitted in the vertical
blanking interval in a dedicated television line (line 16). For details, see Figure 5-21.
Transmission is done in biphase code, and the data contains 15 data words of each 8 bit.
The transmission rate is 2.5 Mbits.
Figure 5-21. VPS Data Line, Line 16 (625 Line Systems)
The first two of the 15 data words are for synchronization of the receiver and for identifi-
cation of the data line. Words 3 and 4 contain a source identification, which is not rele-
vant for VPS.
Word 5 contains a sound identification (Mono / Dual / Stereo) in 2 bits. The remaining
bits are reserved.
Word 6 displays a program-related signal content identification; as is the case for words
7 to 10, it is not relevant for VPS.
Words 11 to 15 with their 40 bits contain the actual VPS information.
Individually the bits signify:
Table 5-8. VPS Information
Bits Information
0 - 1
2 - 6
7 - 10
11 - 15
16 - 21
22 - 25
26 - 31
32 - 40
Network 2 MSBs
Transmission day
Transmission month
Programme start (hour)
Programme start (minute)
Country
Network remaining 6 bits
Programme Type