DigiSnap 3000
Digital Camera Remote Controller
www.Harbortronics.com
8
9/25/03
Rev B
The video signal is buffered by the DigiSnap 3000, allowing use of longer video cables. The buffer
normally has a gain of 1 (0 dB), but can be configured via the remote serial interface for a gain of 2 (+6 dB)
[Not currently implemented].
Camera Connections : J3
1 Power to Camera
2 Power Return
3 Serial From Camera
4 Serial To Camera
5 Video from Camera
6 Video Return
7 Strobe from Camera
8 Strobe Return
9 USB +5V
10 USB/Serial Return
11 USB D+
12 USB D-
Other Connections
The DigiSnap 3000 has several other connection points, used for specific applications and future product
enhancements.
Programming Port : J1
1 Return
2 +5V
3 MCU Clock
4 MCU IRQ
5 MCU A0
6 MCU RST
This port is used for initial programming.
Expansion Port : J7
1 Exp6
2 +5V
3 Exp5
4 Return
5 Exp4
6 Exp2
7 Exp3
8 Exp1
This port is intended to provide expansion capability for unanticipated applications, and is not currently
used.
Serial Port Configuration : J4
1 Return
2 MCU C2
This connector is used to configure the DigiSnap 3000 serial interface. If left un-connected, standard
RS232 is implemented at the terminal interface pins (full-duplex single-ended signals). If a shunt device is
installed, shorting the two pins, the terminal serial port will implement an RS485 half-duplex interface,
where the two serial pins to the terminal form alternating differential transmit and receive functions. RS485
is not currently implemented.
Strobe Buffer Input : P1
1 Strobe Input
This signal input is intended for use with cameras that do not have a standard strobe output signal, such as
in the SeaSnap990-3K system, where a Coolpix 990 is mechanically reconfigured to fit within a cylindrical
housing, and the internal flash unit is removed.
This signal is connected within the DigiSnap 3000 to an IGBT gate, which is lightly pulled to return, and
whose collector is connected to the strobe signals on ports J3 and J5.
