5
9.2 ADDRESS

The required channel is selected by

four address lines.

The operating voltages are:

Logical "1" 5V < Vi < 60V

Logical "0" 0V < Vi< 0.5V

9.3 ADDRESS POLARITY (see fig 6)

Address polarity is controlled by three internal pins and a jumper over two of them,

located on PN 7021 printed circuit board, accessible behind the Enable terminal.

The unit is supplied with the jumper set for "true high" control logic, i.e. "0000"

selects channel #1, and "1111" selects channel #16.

Moving the jumper to the second alternative, reverses the logic.

Figure 6.
Note: If the address contros voltages are generated from different power supplies, then its negative terminal should be connected to the DRA-TM-8's "COM" terminal.9.4 CONTROL TABLES9.4.1 "TRUE LOW" SETTING
ADDRESS BUS EOUTPUT
CHANNEL
A0A1A2
A3
1
1
1
1
1
0
0
0
0
1
0
0
1
1
0
0
1
0
1
0
1
1
1
1
1
8
7
6
5
4
1
1
1
x
1
1
1
x
0
1
1
x
1
0
1
x
1
1
1
0
3
2
1
NO OUTPUT
ADDRESS BUS EOUTPUT
CHANNEL
A0A1A2
A3
0
0
0
0
0
0
0
0
0
1
0
0
1
1
0
0
1
0
1
0
1
1
1
1
1
16
15
14
13
12
0
0
0
x
1
1
1
x
0
1
1
x
1
0
1
x
1
1
1
0
11
10
9
NO OUTPUT