Mikrotron MC132x Spezifikationen PDF herunterladen (Seite 29)

Configuration MC132x Users Manual Rev. 0.23

6.14 External clock input

MC132x frequency synthesizer can use the Camera Link® used to synchronize several MC132x to one

master clock.

To activate set Bit 9 of register 7.

Command: :r7200 :r7[9] = 0, external clock input disabled

:r7[9] = 1, external clock input enabled

This is an example for enabling this function. Depending on the wanted camera

mode it can be necessary to add additional bits of this register.

Response: ACK if enabled by separate command :A<n>

If the external reference clock is different from 3.6864 MHz, the codes for the

clock synthesizer have to be recalculated.

6.15 Polarity of EXP-signal

The polarity of the EXP-signal can be positive- or negative active. Use :r7[8] to select.

Command: :r7100 :r7[8] = 1, negative polarity

:r7[8] = 0, positive polarity

This is an example for enabling this function. Depending on the wanted camera

mode it can be necessary to add additional bits of this register.

Response: ACK if enabled by separate command :A<n>

6.16 Test image

For testing of camera logic and video data transmission, sensor data can be replaced by an internal gray

scale pattern with pixel values of 0..127. Use digital gain command to see pixel values of 0..255.

Command: :r7040 r7[6] = 0, internal gray scale pattern disabled

r7[6] = 1, internal gray scale pattern enabled

This is an example for enabling this function. Depending on the wanted camera

mode it can be necessary to add additional bits of this register.

Response: ACK if enabled by separate command :A<n>

6.17 Image counter

If a sequence of frames is to be recorded for long time at a high frame rate, it can be useful to mark the

images for later identification or check for completeness.

MC132x has a 16-Bit image counter whose count can replace the first two pixel of every image. The

image counter is cleared with every low to high transition of r7[1], the camera enable bit. It is incre-

mented by every new image.

Command example: :r7002 r7[1]

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 44 45

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Mikrotron MC132x Spezifikationen Seite 29