SERIAL INPUT/OUTPUT BOARD ADJUSTMENTS (OPTIONAL)
This board provides an RS-232 serial link with the processor. Consult factory.
DUAL ALARM BOARD ADJUSTMENTS (OPTIONAL) Refer to Fig. 13
An alarm condition is also recognized by the processor which gives the message indicated by Table 5
alternately with the normal parameter being displayed. Either alarm may be connected to either parameter by
means of jumpers on the board. Either alarm may also be configured to alarm on a "high" or "low" condition by
means of a pair of Jumpers for each alarm.
Switches S501-1 and S501-2 on the board determine whether or not the alarm relays 1 and 2 respectively latch
or are released when the alarm condition is no longer present. Latching is inhibited when the switch is closed.
A latched condition may be reset by momentarily closing the appropriate switch or by momentarily shorting the
ALARM RESET terminals on the I/O connector board. A latched alarm can also be reset by software.
Setpoints are easily adjusted by operating in Mode 0 and using R35 to set the desired- level. The set point
potentiometers (R501 and R502) can then be adjusted to give the alarm indication on the display. In adjusting
the setpoints it should be noted that a hysteresis of several hundred million volts is normal.
Table 3
ALARM MESSAGE
CONDITION
DISPLAY
ALARM 1 ACTIVE
1.-.-.-
ALARM 2 ACTIVE
-.-.-.2
BOTH ALARMS ACTIVE
1.-.-.2
22
