Kodak 9020/CINE service manual Accessory slot, Possible Control Functions

SM 2547-1 Service Manual

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 (I2C). The I2C bus is used in a modified way only for the 7/12 PIN Adapter. Typical I2C functions are not available.

a)Possible Control Functions

-P-Bus function in TTL Level through RS_232_R and RS232_T lines

-LAMP dissolve through SL_DISS line

-I2C Communication through SDA, I2C_INT and SLC lines

-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 3-19 03/98