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Operating Basics
TSG 601 User Manual
17
“factory” ID#1 is “Tektronix TSG601 Serial Digital.” The display
will first look like this:
Pressing the B key will change it to this:
You may find this feature useful if you save two or more IDs with
the same first line of text.
3. When the desired storage number is displayed, press
ENTER to
recall the ID or Preset.
4. Press any rectangular key to exit the Recall menu.
Details
CRCs
CRCs (Cyclic Redundancy Codes) are used in serial digital video
systems as a means of error detection and handling (EDH). This sec-
tion attempts to explain CRCs and their use, and freely paraphrases
the proposed SMPTE recommended practice on the topic, RP 165.
Those familiar with the concepts should skip down to “TSG 601
CRC Options,” below, for a discussion of the available CRCs.
Checkwords. CRCs are binary numbers that are computed from the
digital samples in the serial digital video frame. The CRCs serve a
similar function as the Parity Bit in the familiar RS-232 serial inter-
face, but with much more sophistication. The transmitting device
calculates the CRC from the information it is sending, encodes it into
a checkword, and inserts the value into the transmitted data stream.
The receiving device calculates the CRC from the received informa-
tion, decodes the received checkword, and compares the two num-