37
Subject to change without notice
R e m o t e O p e r a t i o n
Remote Operation
Interfaces
The serial interface is a 9-pin connector (DB-9, male connector)
on the rear panel.
Only three wire lines are connected inside:
– pin 2 = Txd (transmit data)
– pin 3 = Rxd (Receive data)
– pin 7 = Gnd (Ground)
Electric voltage on Rxd must be according to the RS232 hard-
ware standard (+12/-12 V max). This provides the capability
to communicate with any PC computer via a COM port. The
communication protocol is a Xon/Xoff procedure and operates
as follows.
Once the instrument has received a command line (refer to
the defi nition below), it sends the Xoff character (19 dec). After
all commands (in the received line) have been computed and
executed, it sends the Xon character (17 dec), making the trans-
mission of a new line possible. Commands are the same for all
interfaces (For more details concerning the optional interfaces
refer to the corresponding manual).
STOP
Either an RS-232 (HO890), IEEE- (HO880) or an
USB-Interface (HO870) can be built in optionally.
With the receipt of a remote command, the display shows:
The user may return to local mode by pressing the context
sensitive keys
below the LOCAL option (all other keys are
locked).
By sending the command LK1, the user may lock all keys and
in this case the display shows:
Commands supported
General
There are two kinds of commands. The fi rst one is the set of
old commands which are HM8133-2 compatible. They are nor-
mally understood by the instrument without changing existing
programs. The second one is a new set with a similar syntax
to the SCPI standard. We recommend to use these commands
which are the only one described hereafter.
Commands are sent by lines to the instrument, one line being
a set of characters in ASCII code between 20 and 127 (dec),
and terminated by an end of line terminator (10 dec) or 13
following by 10 (dec). Each line is composed of one or several
simple commands (elementary) separated one another by the
”;” (semicolon) separator.
Example: :POWER 7 ; :FREQ 500E+6 ; :OUTP ON
The level is at +7 dBm, the frequency at 500 MHz and the output
signal ON. The strings of data are not case sensitive. That means
lower case and upper case are the same. A simple command
gives an access to a quantity or a function of the instrument. All
commands acting on the same quantity are brought together
in a tree structure. We are going to detail function by function
beginning with the simplest and the most useful.
Commands description
Syntax conventions
The following syntax conventions are valid:
– lower cases in keywords are optional, for example the key-
word OUTPut may be transmitted as OUTP (short writing)
or OUTPUT (long writing)
– [ ]
The keyword in brackets is optional
– |
Exclusive OR between several parameters
– NR1 A string of digits without decimal point (1234)
– NR2 A string of digits with a decimal point (1234.56)
– NR3 A string representing a decimal number with an
exponent
(1234.56E+3)
Initialisation
*RST
idem key ESC at power on time except beep,
display, com and memory confi g (0 – 9) which
are not modifi ed
General commands
*IDN? Identifi cation
*SAV x
Saving the current confi guration (x from 0 to 9)
*RCL x
Recall a confi guration (x from 0 to 9)
SNR?
Serial number of the instrument
FAB?
Manufacture date of the instrument
Bus commands
LK0 Enable
local
mode
LK1
Disable local mode (all buttons locked)
RM0 Disable
remote
mode
RM1 Enable
remote
mode
Sound commands
BP0 Beep
off
BPS Soft
beep
BPL Loud
beep
OUTPUT
Commands in order to activate the RF output signal
Syntax:
:OUTPut[:STATe] 0 | OFF | 1 | ON
(1)
:OUTPut[STATe]?
(2)
Sending line (1) activates or deactivates the RF output. The pa-
rameters 0 or OFF turn off the RF output (if the output is ON),
1 or ON turn on the RF output. Sending line (2) the instrument
returns the output state of the instrument. It sends back 1 for
output ON and 0 for output OFF.
Examples:
:OUTP ON
Ouput ON
:OUTP 1
Ouput ON
:OUTPUT ON
Ouput ON
:OUTPUT:STATE 1 Ouput ON
:OUTP?
Request for state
:OUTPUT:STATE? Request for state
