1-5
1
When the N4865A is transistioned to the Listen Active State from the Talk
Active State, it discards any data in the GPIB talk buffer. Similarly, when the
N4865A is transistioned to the Talk Active State from the Listen Active State,
it discards any data in the GPIB listen buffer
1.4.5 Data Transfer Rate
The following are short term data rates:
> 17 kbytes/second to the GPIB bus from 4865 memory.
> 20 kbytes/second from the GPIB bus to 4865 memory.
1.4.6 Transfer Delays
The following times are averages and vary depending upon what the 4865
was doing when the GPIB command or query occurred, the Ethernet network
loading and oscilloscope reaction time.
Short device commands
18 milliseconds typical
*IDN? Queries
46 milliseconds typical
1.4.7 Remote-Local Operation
The N4865A uses the
device_remote
and
device_local
RPCs to transmit the
device_local
device_local
GPIB Remote and Local states to the companion oscilloscope. The N4865A
does not support the GPIB Remote with Lockout or the Local with Lockout
states.
1.4.8 Device Clear and Selected Device Clear
When the N4865A receives a Selected Device Clear or a Device Clear on the
GPIB bus, it sends a
device_clear
RPC to the companion oscilloscope and
device_clear
device_clear
clears its GPIB talk and GPIB listen buffers.
1.4.9 Group Execute Trigger (GET)
When the 4896 receives a Group Execute Trigger (GET) on the GPIB Bus, any
data in the GPIB listen buffer is sent to the companion oscilloscope and then
the N4865A sends a
device_trigger
RPC to the companion oscilloscope.
device_trigger
device_trigger
Summary of Contents for N4865A
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