CV-M71A
-5-
5.4.1 (b) Trigger input
•
The trigger input is available from either pin #11 on the 12 pin connector or pin #5 on the 6 pin con-
nector.
•
These inputs are internally connected, do not
use simultaneously.
•
The input is AC coupled. To allow a long pulse
duration, the input circuit is a flip-flop. When
it is toggled the negative or positive differen-
tiated spikes are caused by the falling or rising
trigger
edges
.
•
The trigger polarity can be changed by TP=1.
•
Trigger input level is 4 V ±2 V. It can be termi-
nated by SW301.1: ON for 75
Ω
. OFF for TTL.
FIGURE 7.Trigger input.
5.4.1 (c) XEEN output
•
XEEN is located on pin #9 of the 12-pin
connector. This signal is active during the
accumulation (exposure) period of the
camera.
•
The output circuit is 75
Ω
complementary
emitter followers. It will deliver a full 5
volt signal.
•
Output level >
4 V from 75
Ω
. (No termina-
tion).
FIGURE 8.XEEN output
6 Functions and Operations
6.1
Basic functions
The CV-M71A camera is a progressive scan camera with a primary color mosaic CCD (Bayer). An internal DSP
performs the color-interpolation, outputting separate analog R, G and B signals through the 9-pin D-sub
connector.
An analog iris video signal can be used for lens iris control.
There are four modes; continuous, edge pre-select (EPS), pulse width control (PWC) and sensor gate control.
The accumulation can be HD synchronous or HD asynchronous. For trigger modes using fast shutter times,
smearless read out is possible.
