User Manual

Command Syntax
GPIB End of Mess
age (EOM) Terminators. GPIB EOM terminators can be the
END message (EOI asserted concurrently with the last data byte), the ASCII
code for line feed (LF) sent as the last data byte, or both. The oscilloscope
always terminates messages with LF and E OI. White space is allowed before the
terminator; for example, CR LF is acceptable.
USB End of Message (EOM) Terminators. The EOM bit must be set in the USB
header of the last transfer of a command message
See the USB Test and Measurement Class Specification (USBTMC) section
3.2.1 for det
ails. The oscilloscope terminates messages by setting the EOM
bit in the USB header of the last transfer of a message to the host (USBTMC
Specification section 3.3.1), and by terminating messages with a LF. White space
is allowed before the terminator; for example, CR LF is acceptable.
RS-232 End of
Message Terminators. RS-232 EOM terminators can be a CR
(carriage return), LF (line feed), CRLF (carriage return followed by a line feed),
or LFCR (line feed followed by a carriage return)
When receiving, the oscilloscope accepts all four combinations as valid input
message ter
minators regardless of the currently selected terminator. When a
combination of multiple characters is selected (CRLF o r LFCR), the oscilloscope
interprets the first character as the terminator and the second character as a null
command.
Constructe
d M nemonics
Some header mnemonics specify one of a range of mnemonics. For example, a
channel mnemonic could be CH2. You can use these mnemonics in the command
just as yo
u do any other mnemonic. For example, there is a CH1:VOLts command
and there is also a CH2:VOLts command. In the command descriptions, this
list of choices is abbreviated CH<x>.
Channel mnemonics. Commands specify the channel to use as a mnemonic in
the heade
r.
Symbol
Meaning
CH<x> 2-channel models: A channel speci fier; <x> is 1 or 2.
4-channel m
odels: A channel specifier; <x> is 1, 2, 3, or 4.
Reference Waveform
Mnemonics
Commands can specify the reference waveform to use as a mnemonic in the
header.
Symbol Meaning
REF<x>
2-channel mod
els: A reference waveform specifier; <x> is A or B.
4-channel models: A reference waveform specifi er; <x> is A, B, C,
or D.
2-6 TDS200, TDS1000/2000, TDS1000B/2000B, TDS2000C, TPS2000 Programmer