Agilent Technologies VXI E1439 - Manual (Page 55)

45
Using the Agilent E1439
Fiber Optic Interface
Fiber Modes
The E1439D’s fiber interface can operate in five different modes:
• “Off” on page 45
• “Copy” on page 46
• “Raw” on page 47
• “Generate” on page 48
• “Append” on page 50
Off
The Off fiber mode disables the fiber transmitter but allows the fiber receiver to read control
signals. Normal data collection and filtering continues, and the data port selection determines
whether data is sent to the local bus (Agilent E1439D only) or read from the FIFO via the VME
bus. See the following illustration.
Note
Setting the data port to Fiber while in the Off fiber mode causes the data FIFO to fill up with
filtered ADC data, which then causes data collection to stop.
Fiber Interface Setup
Fiber Mode Off
Rate setting ignored
BOF setting ignored
CRC setting ignored
Flow Control setting ignored
Epoch Generate setting ignored
Epoch Size setting ignored
Fiber TX Fiber RX
VME BUS
LBUS
ADC
DIGITAL
FILTERS
FIFO
E1438D / E1439D