Clock Pre-Scaler; Pulse Generator Selector; Pulse Generator Length; Pulse Generator Start Point - JAI Elite EL-2800M-GE2 User Manual

5.6.1

Clock Pre-scaler

Clock pre-scaler (Divide Value) can set the dividing value of the frequency divider (12-bit
length) and the pixel clock is used for this. Four built-in pulse generators work by the same
clock. In the EL-2800M/C-GE2, the internal pixel clock is 54 MHz.
5.6.2

Pulse Generator Selector

This is where you select one of the 4 pulse generators in order to set or modify its parameters.
Table - 11 Pulse Generator setting
Trigger Selector
item
Pulse Generator
0
Pulse Generator
1
Pulse Generator
2
Pulse Generator
3
Pulse generator
Clear source IN
(Clear activation
= Rising edge
Clear SYNC mode
= Async)
Pulse generator
Output
5.6.3

Pulse Generator Length

Set the counter up value (number of clocks, refer to Table 12) for the selected pulse generator.
If Repeat Count value is "0", and if Pulse Generator Clear signal is not input, the pulse
generator generates the pulse repeatedly until reaching this counter up value.
5.6.4

Pulse Generator Start Point

Set the active output start count value for the selected pulse generator.
However, please note that a maximum 1 clock jitter for the clock which is divided in the clock
pre-scaler can occur.
EL-2800M-GE2 / EL-2800C-GE2
Description
If Pulse Generator 0 is selected, Length, Start Point, End Point, Repeat Count, Clear Source、Clear
Inverter, Clear Activation and Clear Sync Mode of pulse generator 0 are displayed under the
selector.
If Pulse Generator 1 is selected, Length, Start Point, End Point, Repeat Count, Clear Source、Clear
Inverter, Clear Activation and Clear Sync Mode of pulse generator 1 are displayed under the
selector.
If Pulse Generator 2 is selected, Length, Start Point, End Point, Repeat Count, Clear Source、Clear
Inverter, Clear Activation and Clear Sync Mode of pulse generator 2 are displayed under the
selector.
If Pulse Generator 3 is selected, Length, Start Point, End Point, Repeat Count, Clear Source、Clear
Inverter, Clear Activation and Clear Sync Mode of pulse generator 3 are displayed under the
selector.
Pulse generator
length
0
Pulse generator End point
Pulse generator Start point
Fig.8 Pulse Generator Pulse construction
Pulse generator repeat count = N
(Pulse generator length x N)
Pulse generator
length
0
- 39 -
Pulse generator
length
0