Mallinckrodt NPB-190 Betreibershandbuch PDF herunterladen (Seite 85)

Appendix C: Data Port Protocol

If battery power is disconnected or depleted, trend data and user

settings will be lost. All data is stored with error detection

coding. If data stored in memory is found to be corrupted, it is

discarded.

NURSE CALL

The NPB-295 provides two different types of nurse call

interfaces; an RS-232 level and relay closure

. The RS-232 level

nurse call function only operates when the monitor is connected

to AC power

. It will not operate when running on battery. The

relay-based nurse call function is available when the monitor is

operating either on AC power or when powered by battery

The remote location will be signaled anytime there is an audible

alarm.

Pin 11 on the data port is the RS-232 level nurse call signal and

pin 10 is ground (see Table 5)

. The voltage between these pins is

determined by the nurse call polarity setting (normally high or

normally low) and whether the monitor is in alarm state

. The

nurse call polarity setting by using the procedures in the Start-up

and Use section

. To access the nurse call menu from the main

menu, press softkeys SETUP, NEXT, NEXT and NCALL.

When the nurse call polarity setting is normally high (NORM +)

and there is no alarm condition, the voltage between pins 11 and

5 will be +5 to +12 VDC

. Whenever the monitor is in an alarm

condition, the output between pins 11 and 5 will be -5 to -12

VDC. When the setting is normally low (NORM -), the readings

are opposite, as indicated in Table 7.

These voltages are present only the monitor is operating on AC

power.

If the audible alarm has been turned off, or silenced, the nurse call

alarm is also silenced.

1 2 ... 80 81 82 83 84 85 86 87

Keine Kommentare

Mallinckrodt NPB-190 Betreibershandbuch Seite 85