Accessory Slot - Kodak EKTAPRO 4020 Service Manual

SM 2547-1

Accessory slot

This slot was designed for EKTAPRO Models 7020, 9020 and 9020/CINE to receive certain professional
dissolve
units. The 12/7 PIN ADAPTER is a PCB with:
an "Intern/Extern" switch for a check. Intern means "Lamp on" and Extern means
"Projector is controlled by the dissolve unit".
connectors to connect the ADAPTER to the projector, and an ADAPTER CABLE for
different dissolve units. The ADAPTER CABLE has a 25 PIN SUB-D connector to connect
the PCB ADAPTER and a combination socket for 12 and 7 PINS.
Accessories that allow the EKTAPRO projectors to communicate with older dissolve equipment are available for
the 12/7 PIN sockets.
The slot contains an Inter IC Communication Interface (I
7/12 PIN Adapter. Typical I
a) Possible Control Functions
- P-Bus function in TTL Level through RS_232_R and RS232_T lines
- LAMP dissolve through SL_DISS line
2
- I C Communication through SDA, I
- Voltage Supply for accessory slot modules. See 2.4 CONNECTORS.
- Special Control lines SLOT_A, SLOT_B, SLOT_C
All lines are connected to ground means 12/7 PIN adapter present, PROJECTOR LAMP
off, waiting for dissolve pulses on SL_DISS line
- all high, no ACCESSORY installed
Kodak AG, Stuttgart
2
C functions are not available.
2 2
C). The I C bus is used in a modified way only for the
2
C_INT and SLC lines
3-19
Service Manual
03/98