Spirent DLS 6700, Руководство по эксплуатации

Страница: 21 / 48

Chapter 4: REMOTE CONTROL
Spirent Communications
7104000557
Page 4-7
<Ver> is the revision level of the control firmware (always 2 digits)
*OPC Operation Complete
Type: Synchronization command
Function:Indicates to the controller when the current operation is com-
plete. This command will cause the DLS 6700 to set bit 0 in the Event
Status Register (ESR) when all pending operations are completed. The
bit is read with the *ESR? command, which also clear the bit. Commu-
nication can proceed as normal after this command.
*OPC? Operation Complete Query
Type: Synchronization command
Function:Indicates when the current operation is complete. This will
cause the DLS 6700 to put an ASCII 1 (decimal 49, hex 31) in the out-
put queue when the current operation is complete. Communication can
proceed as normal after this command, but be prepared to receive the
“1” at any time. See Section 4.6.3 "DLS 6700 Synchronization".
*PSC <NRf> Power-on Status Clear
Type:
Status and event command
Function: Indicates if the unit should clear the Service Request Enable Register
and the Standard Event Status Register at power-on. If 1 (or higher)
then all the enable registers are cleared at power-on, if 0 then all the
enable registers are restored from the non-volatile RAM at power-on.
The factory default is 1 (clear all the enable registers). Any change to
the “Power-on Status” is saved in non-volatile RAM, and is always
restored on power up.
*PSC? Power-on Status Clear Query
Type: Status and event command
Function: Return the Power-on Status Clear value. If 1 then all the enable regis-
ters are cleared at power-on, if 0 then all the enable registers are
restored from the non-volatile RAM at power-on. The factory default is
1 (clear all the enable registers).
*RST Reset
Type: Internal command
Function: IEEE 488.2 level 3 reset. This command will initialize the DLS 6700
with the bypass loop, and cancel any pending *OPC operation. It will
not affect the output buffer or other system settings of the unit. Note
that this is NOT equivalent to the power-up reset.
*SRE <NRf> Service Request Enable
Type:
Status command
Function: Sets the Service Request Enable Register (SRER). An integer value
indicates which service is enabled, with the following bit map: