Electrical Interface
All connectors are on the camera rear plate. The standard
SP-11 uses Hirose HR10A series 6-pin circular connector
for power and a MDR36 (mini D-shell) for data and control
signals. Data, clocking, and control signals use the EIA-644
(LVDS) standard for data transmission.
Input Control Signals
Control signals are differential, requiring complements de-
noted with a “B” suffix (e.g. BIN, BINB).
All inputs are optional
and default to logic high.
Most applications will use an EXSYNC input to control line
rate, but the SP-11 can operate in “free-run mode” in which
it outputs data without requiring any inputs.
Output Signals
These signals indicate when data is valid, allowing you to
clock the data from the camera to your acquisition system:
Clocking Signal
Indicates
LVAL (high)
Outputting valid line
STROBE (rising edge)
Valid data
Digital Data
The SP-11 digitizes to 10 bits and outputs the most
significant 8 bits in LVDS format on a MDR36 connector.
After the end of each valid line, the camera outputs two iso-
lation pixels and four test pattern pixels. These pixels alter-
nate between 10101010 and 01010101 (eg. 170, 85, 170,
85).
2
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EXSYNC (optional)
PRIN (optional)
SPEED (optional)
BIN (optional)
GAIN 0 (optional)
GAIN 1 (optional)
+15V
+5V
-5V
STROBE
8 BIT DIGITAL OUTPUT
LVAL
MCLK (optional)
or +12V (SP-12 only)
Figure 1. Camera Interface
* Free run is disabled when the camera receives an EXSYNC edge. The
camera will not free run again until it is powered off and on again.
EXSYNC
EXSYNC and PRIN are used together, as outlined below.
PRIN
Camera Operation
Supplied from
external source
(Min 300Hz)
Disabled or
unconnected
(high)
Edge Mode:
EXSYNC falling edge triggers line
readout. Camera integrates incident light
from the falling edge of EXSYNC to the
next falling edge of EXSYNC.
Level Mode:
EXSYNC falling edge triggers line
readout. Camera integrates incident light
while EXSYNC is high (from
edge
of EXSYNC to
edge of EXSYNC).
While EXSYNC is low, the camera does not
integrate incident light.
rising
falling
(Min 300Hz)
Supplied from
external source
Enabled
(low)
Unconnected* Disabled or
unconnected
(high)
Free Run Mode:
Camera operates at maximum line rate
until it receives an EXSYNC edge. No
exposure control.
Free Run Mode:
Camera operates at maximum line rate
until it receives an EXSYNC edge. Each
line is only exposed for ~400ns.
Unconnected* Enabled
(low)
Table 2. EXSYNC and PRIN
MCLK
SPEED
BIN
GAIN
Internal MCLK controls pixel rate
(30MHz)
MCLK controls pixel rate (maximum
30MHz)
Unconnected
Supplied
externally
Pixel rate = MCLK rate
No binning
Pixel rate = MCLK/2
Camera combines the charge
collected by two horizontally
adjacent pixels.
Unconnected
or High
Unconnected
or High
GAIN0 High or
Unconnected
Low
Low
These control inputs can be used independently of each other.
GAIN1 High or
Unconnected
GAIN0 Low
GAIN1 Low
8x (default)
4x
2x
1x
Table 3. Control Signals
