400 B/W Reflection Densitometer
6-26-2
An RS232 to modular interface adapter is available from X-Rite
which performs as shown in the diagram on the previous page. This
adapter also provides a jack for the AC adapter so that only one
cable need be connected to the 400. Also, when the adapter is not
connected to the jack, the +V CHARGER is connected to pin 9 of
the DB25 in the diagram. The charger ground is connected to the
jack ground only.
The part numbers for these interface adapters are: P/N 418-70 (male
DB25 connector) P/N 418-71 (female DB25 connector) See
“Accessories” later in this chapter for other adapters.
A 10-foot modular to modular cable for connection of the 400 to the
interface adapter is available by ordering P/N SE108-69.
Term Definitions
Pin 2 Transmitted Data: Data transmitted from the densitometer
with parameters (baud rate, format) set by the densitometer.
Pin 3 Received Data: Data received by the densitometer from
outside source using the same parameters as the densitometer.
Pin 4 DTR (Data Terminal Ready): Logic 0 active (On Line) and
Logic 1 during: Power Off, Power Up, Self Test, during
measurements, and when serving RCI.
Pin 5 is ignored.
Pin 7: This pin is used for supplying 12VDC @ 700ma for charging
the 400 without having the Adapter connected directly to the unit.
Input Characteristics
Logic 1=+.8VDC to -25VDC
Logic 0=+2.25VDC to +25VDC
Output Characteristics
Logic 1=approximately -4VDC
Logic 0 = approximately +5VDC
Outputs are @ 0VDC during Power Down.
