Clara
13
Version 2.0 rev 24 Mar 2015
Table 2: Multi I/O Timing Cable Pinouts 26-way D type connector
1
External Trigger
14
I/O data bit 4
2
Trigger Invert Input
15
I/O data bit 5
3
GND
16
I/O data bit 6
4
OutputDAC1
17
I/O data bit 7
5
OutputDAC2
18
GND
6
GND
19
+5V Output
7
Frame Readout
20
GND
8
Fire
21
I
2
C Data
9
Interline Shift
22
I2C Clock
10
I/O data bit 0
23
Shutter Output TTL
11
I/O data bit 1
24
Arm
12
I/O data bit 2
25
GND
13
I/O data bit 3
26
GND
• External trigger is a TTL input. By default it triggers on a rising edge. This can be inverted by tying Pin 2 to ground. Note that this can also be
inverted in software.
• Frame Readout, Fire, Interline Shift and Shutter Output are all TTL timing outputs
• OutputDAC1 and OutputDAC2 are 16 bit DAC outputs which can be configured by the user to be up to approximately 10.1 Volts. Maximum
output current which can be drawn is 10mA
• +5V Output is a 5V supply to signal to the user that the camera is powered up. Maximum current which can be drawn is 500mA
• I/O bits (8 off) are user programmable and can either be inputs or outputs. When being used as inputs these default to being weakly pulled high.
The maximum low level input voltage is 1.5V and the minimum high level input voltage is 3.5V. As outputs the maximum “high” level output
current drawn is 0.03mA and the maximum “low” level current which each output can sink is 10mA
• I
2
C Clock and Data are available for user communication to other I
2
C devices
2.2.4 p
oweR
i
nput
The Clara is powered via an external power supply unit (PSU). This is described in Section 2.2.6.
2.2.5 p
oweR
s
witCH
A power switch is located on the rear plate of the Clara for convenience.
2.2.6 p
oweR
s
upply
u
nit
(psu)
The supplied external PSU (PS-12) requires an AC mains input of 100 - 240 V (± 10%), 50/60 Hz (± 10%). Maximum
supply current = 1.4A, with typical power consumption of approximately 75 W.
The output of the PS-12 is 12V DC at 5.0A maximum. The PS-12 PSU is fitted with an IEC connector for the electrical
supply input. The connection to the Clara is made via a 4-pin socket.
Figure 5: External Power Supply
PRODUCT OVERVIEW
