Honeywell SPZ-8000 - Vertical Speed Indicator (VSI); Vertical Speed Indicator

SPZ--8000 Digital Integrated Flight Control System
A28--1146--055
REV 2
3-5
Air Data System (ADS)
VERTICAL SPEED INDICATOR (VSI)
The VSI is shown in Figure 3--4.
1
AD--58052@
2
4
6
1
2
4
.5
.5
UP
0
DOWN
1000 FT PER
MIN
VERTICAL
SPEED
Vertical Speed Indicator
Figure 3--4
The VSI is a servoed pointer display of vertical speed information from
the DADC. Vertical speed rates of 0 to 6000 feet per minute are
displayed on the indicator
The failure monitor detects the valid and invalid signals in the indicator
to control the failure warning (OFF) flag. The failure warning flag is
displayed if any of the following conditions exist:
D Primary instrument power is lost
D Internal power supply fails
D Excessive servo null
D Absence of external air data valid signal
D Absence of 12 V dc reference voltage
D Excessive rate vertical speed input signal.
NOTE: Some installations with TCAS do not install this VSI. In these
installations, vertical speed is displayed on the EADI.