HP 5335A - Page 50

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Operation and Programming
3-165. Device Command Definitions
3-166. A device command is a sequence of two or more ASCII-coded bytes, sent to the 5335A
over the HP-IB, that causes the counter to perform a specific function. Before discussing
individual device commands, it is useful to classify these commands into five types:
1. N u meric Command: Type N; A sequence of two ASCII-coded bytes followed by a
sequence of bytes representing a decimal number and a terminator. A terminator is
either a comma, semicolon, space, carriage return, or line feed. A Termination may
also be implied with the start of the next command. For a numeric command,
the entry must follow the following format:
<N spaces> [sign] <J digit$> [.<K digits>] [E [Sign] <L digits>]
where:
N=0 to any value
J=1 to 12
K=0 to 11
1=1 or 2
and:
J+K <12
Absolute value of number < 1 0 1 0 . |f more than 12 digits are received, they are ignored.
The following commands are equivalent:
9B25A
wrt 703, “RE, MS 123456"
wrt 703, ;“REMS+1.23456E+05"
wrt 703, “RE, MS123.456E3"
123456-—A; wrt “RE MS", A
wrt 703, “RE, MS123.456E3"
9835A/45A
OUTPUT 703; “RE, MS 123456"
OUTPUT 7,3; “REMS+1.23456E+05"
OUTPUT 703; “RE, MS123.456E3"
Scale = 123456
OUTPUT 703; “RE MS", Scale
OUTPUT 703; “RE, MS123.456E3"
2. B i n ary Command: Type B; A sequence of two ASCI l-coded bytes followed by either a 0
or a 1. The 0 indicates the selected function if “OFF" or “FALSE", and the 1 (or any non¬
zero value) indicates “ON” or “TRUE". The binary command uses the same format as
numeric commands. The following are binary commands:
wrt 703, “WA1"
TRUE
OUTPUT 703; “WA1"
wrt 703, “WA0"
FALSE
OUTPUT 7,3; “WAO"
wrt 703, “WA123" TRUE OUTPUT 703; “WA123"
True = 1
1—A; wrt 703, “WA", A TRUE
OUTPUT 703; “WA", True
3. I n teger Commands: Type /; A sequence of two ASCII-coded bytes followed by a
sequence of bytes representing a decimal number and a terminator. For integer
commands, negative number are converted to their absolute values. If the number is
outside the expected range, the parameter is converted to zero. The integer command
uses the same format as numeric commands. The following commands are equivalent:
9825A
9835A/45A
wrt 703, “CY2"
wrt 703, “CY-2"
wrt 703, “CY 0.2E+1"
OUTPUT 703; “CY2"
OUTPUT 703; “CY-2"
OUTPUT 703; “CY0.2E+1"
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