9
3.5
SERIES 612C –5 VOLT PROGRAMMING MODE
Series 612C units ordered with the –5VPRO (-5 Volt Programming) option, include an extra 5
pin hexaganol connector (J3). The connector contains additional monitor outputs and a 0 to –
5 Volt programming input. This option provides compatibility with earlier Series 612C models
when used with –5 Volt programming. The mating connector for J3 is included and J3
connections are shown below in Table III-2.
In this mode the programming signal is applied to J3 pin A. A 0 to –5Volt programming input is
required to achieve 0 to 100% output voltage programming. No jumpers should be attached to
P2, the external connector. In this mode there is no internal control, the internal potentiometer
is bypassed.
TABLE III-1 PCB 100 JUMPER POSITIONS
STANDARD MODE:
Jumper pins 1 to 3, pins 5 to 7
3.3
-5 VOLT PROGRAMMING (for 0 to 100% output voltage) MODE:
Jumper pins 1 to 2, pins 3 to 4
3.4
-5 VOLT PROGRAMMING (for 0 to 103% output voltage) MODE:
Jumper pins 1 to 2, pins 3 to 5, and pins 6 to 8
3.5
SERIES 612C –5 VOLT PROGRAMMING MODE:
Jumper pins 3 to 5, pins 4 to 6, and pins 7 to 8
TABLE III-2 J3 PIN CONNECTIONS
(Series 612C Option –5VPRO only)
PIN A:
0 to –5Volt programming input
PIN B:
NC
PIN D:
Output voltage monitor (0 to +5V for 0 to maximum HV output)
PIN E:
GND
PIN H:
Output current monitor (0 to +5V for 0 to maximum current out)