DLS 400E3 Operating Manual
Page 4-10 - Spirent Communications
7104000537 03/04 -2
Function:
Returns the results of the self-test done at power up. The number returned has the follow-
ing bit map:
Bits 7 to 0 have values of 128, 64, 32, 16, 8, 4, 2 and 1, respectively. For example, if bits 3
and 5 are set then the integer value is 40 (8+32).
*WAI
Wait to continue
Type:
Synchronization command
Function:
Used to delay execution of commands. The host system ensures that all commands
received before “*WAI” are completed before processing any new commands. This means
that all further communication with the host system is frozen until all pending operations
are completed.
4.8
Status Reporting
There are two registers that record and report the system status, the Status Byte Register (STB), and the
Event Status Register (ESR).
For both registers there are three basic commands: one to read the register, one to set the enabling bits, and
one to read the enabling bits.
Where <NRf> is the new value of the register.
4.8.1
Status Byte Register (STB)
The bits of this register are mapped as follows:
bit 4: MAV (Message Available Bit)
Indicates that the Output Queue is not empty. If MAV goes high and is enabled then MSS
goes high.
Table 2-4:Register Commands
Status Byte Register
Event Status Register
Read Register
*STB?
*ESR?
Set Enabling Bits
*SRE <NRf>
*ESE <NRf>
Read Enabling Bits
*SRE?
*ESE?
Summary of Contents for DLS 400E3
Page 1: ...Operating Manual DLS 400E3 ADSL European Wireline Simulator Revision 2 March 2004...
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