Operator`s manual

V-SCOPE Function Select Byte/Data

Byte(s)

The function byte determines which function on the addressed V-SCOPE card will be effected by the command. Most

commands follow this byte with one data byte, which represents the new binary value for the selected function. The

table below lists each function, and the associated data byte:

Function ByteData Byte(s) Description

01 hex 1 (0-2) Set V-SCOPE mode.

00 = Vector Scope mode.

01 = Waveform Display mode.

02 = Overlay Vector/Waveform mode.

03 = Split Screen Vector/Waveform mode.

02 hex 1 (0-1) Superimpose Output control.

00 = Superimpose mode OFF.

01 = Superimpose mode ON.

03 hex 1 (0-1) 1-H/2-H Waveform mode default select.

00 = 1-H Waveform mode.

01 = 2-H Waveform mode.

04 hex 2 (0-3,02-127) First Byte: Trace Update mode select.

Second Byte: Trace rate (used in mode 3)

0 = Normal.

1 = Freeze Trace.

2 = Peak Hold mode.

3 = Variable rate select.

05 hex 1 (0-1) Frequency response select.

0 = Flat response.

1 = Low Pall (Luma) response.

For command 04, (Trace mode select) the second byte is used to select the trace update rate (in frames), and will be

used whenever mode 3 is selected via the first byte. However, the second byte must always be transmitted no matter

which mode is being selected. Selecting a slower update rate (by increasing the value) will cause the display to fill in

more fully. The default update rate (used in normal mode) is 2 frames.