Note

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.

 

E1438D / E1439D

Fiber RX

 

Fiber TX

ADC

DIGITAL

FIFO

FILTERS

 

 

VME BUS

LBUS

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

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.

45

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Image 55
Agilent Technologies E1439 manual Fiber Modes, Off, Fiber Interface Setup