Tektronix DPO4000 Uživatelský manuál stáhnout pdf (Strana 249)

100

101

Commands Listed in Alphabetical Order

Index 9

White (text)

Index 10 Tek b lue

Index 11 Bright blue

Index 12

Undeﬁned

Index 13 Blue

Index 14

Undeﬁned

Index 15 Dark blue

Bit 4

If set, the

foreground color is set to the default foreground color.

Bit 3

If set, th

e background color is set to the default background color.

Bit 2

Undeﬁne

Bit 1

Undeﬁne

Bit 0

Undeﬁn

The ESC (escape) character followed by the @ character turns inve r se video on or

off and can be embedded in the message string. Example: “abcESC@defESC@

ghi” speciﬁes the string “abcdefghi” where the “def” portion is displayed in

inverse video.

Example: “abcESC#defESC)ESC@ghi” speciﬁes the string “abcdefghi” where

the “def” portion appears in the channel 3 color (magenta) and the “ghi” portion

appears in the normal text color except it’s in inverse video.

An alternate way to enter characters is octal escape sequences. This consists of a

backslash followed by numerals in the standard C language printf fashion.

Another way to enter characters is \xnn where the nn is the hexadecimal value of

the c haracter to display.

An advantage of these methods is that any controller program can be used.

Another advantage is it’s easy to access characters with the h igh bit set, that is,

those characters with a decimal value greater than 127.

An alternate way to enter certain characters is with a backslash followed by a

single character (following “standard” Unix) as described in the table below.

Newline (carriage return and line feed)

\ Backslash (\\ is required to get a backslash character)

Horizontal tab; the next 2 characters specify the pixel column to tab to

as explained earlier

If a backslash is followed by an u ndeﬁned special character, the backslash is

ignored and the character following it is accepted as is.

NOTE. The use of any escape codes other than those described above may

produce unpredictable results.

MSO4000 and DPO4000 Series Programmer Manual 2-239

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