Änderungen vorbehalten / Subject to change without notice
5 7
9.10 *WAI
Description: Wait-to-continue Command. The purpose of *WAI is to prevent the
instrument from executing any further commands or queries until there
are no operations pending.
Forms:
Command only.
Parameters: None.
N/A Reset values for scope settings are not available.
10. Application of SCPI Commands
The following short description elucidates by aid of examples the application of SCPI
commands. They can be transmitted to the interface HO79-6 via the GPIB or the RS-
232 connector.
10.1 RS-232
It is assumed that HO79-6 is connected via a 1:1 cable (no line crossovers) to a PC with
a windows version that includes “HyperTerminal“.
HO79-6 Settings:
SW1:
RS-232; Setting 4 to 7; e.g. setting 4.
SW2:
Baud Rate; Setting 0 to 7; e.g. setting 4 (19200 Baud).
HyperTerminal:
1. Start HyperTerminal by clicking on “Start/Programs/Accessory/HyperTerminal/
Hypertrm.exe“.
2. Input a name for the new connection (e.g. HO79), select an icon and confirm with OK.
3. Call “connect with:“ resp. “direct connection via COM X“, chose the Communication
Port (e.g. COM2). OM2) and confirm with OK.
4. Select the following settings under “features of COM X“:
Bit per Seconds = 19200
Data bits = 8
Parity = none
Stop bit = 2
Protocol = Hardware
Confirm with OK.
5. Chose “Data/Features“, activate “Settings“ and select “TTY“ under “Emulation“.
6. Click on “ASCII-Configuration“ select the option “Local Echo“ under “settings for
ASCII transfer“. Confirm by clicking OK.
7. Select “Call/Connecting“.
The next following keyboard inputs (SCPI Commands) are transmitted immediately to
the Interface. If e.g. the command “:*IDN?;“ has been input, HO79 answers with a
character string.
10.2 GPIB
The following description assumes that either the GPIB compatible interface card HO80
or HO82 has been installed in the PC and the required software has been
installed too. PC and Interface must be connected by a GPIB compatible
cable.
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