Operating instructions

IEC/IEEE-Bus Commands of HP Models R&S ESCI
1166.6004.12 6.258 E-1
Supported Commands of 8566A and 8568A Models
The command syntax is very different for models A and B. Different names are assigned to identical
instrument functions, and the command structure likewise differs considerably between models A and
models B.
The command structure for models A is as follows:
<command> ::=
<command code>[<SPC>][<data>|<step>][<SPC>][<delimiter>][<command code>]...<delimiter>
<data> ::= <value>[<SPC>][<units code>][<SPC>][<delimiter>][<SPC>][<data>]...
<step> ::= UP|DN
where
<command code> = see Table "Supported Commands"
<value> = integer or floating-point numerical value
<units code> = DM | -DM | DB | HZ | KZ | MZ | GZ | MV | UV | SC | MS | US
<delimiter> = <CR> | <LF> | <,> | <;> | <ETX>
<SPC> = 32
10
<ETX> = 3
10
Command sections given in [ ] are optional.
The R&S ESCI IEC/IEEE-bus hardware differs from that used in the HP analyzers. Therefore, the
following constraint exists:
<LF>| <EOI> are still used as delimiters since the IEC/IEEE-bus hardware is able to identify them. The
other delimiters are identified and evaluated during syntax analysis.
Supported Commands of Models 8566A and 8568A
8566A / 8568A
Command
Supported Command Subset Known Differences
A1
A2
A3
A4
AT
AT <numeric_value> DB
AT DN
AT UP
AT?
INP:ATT
AT DN/UP:
Step size
B1
B2
B3
B4
C1
C2
CA
CF
CF <numeric_value> HZ|KHZ|MHZ|GHZ
CF UP
CF DN
CF?
Default value
Range of values
Step size
CR
Default ratio span / RBW