Aspen Avionics EFD1000 E5 - 8.2.5.6 Volt Reference Output; 8.2.5.7 KI-525 A Heading and Course Datum Output

EFD1000 E5 Dual Electronic Flight Instrument (EFI) Install Manual
DOCUMENT # 900-00041-001 PAGE 91-226 REVISION D
© Copyright 2019 Aspen Avionics Inc.
8.2.5.6 Volt Reference Output
An internally generated +15Vdc reference for KI-525 emulation.
Output Voltage: ............. +15Vdc ±2Vdc
Load Current: ................ 30ma maximum
8.2.5.7 KI-525A Heading and Course Datum Output
Emulated KI-525A outputs to drive the heading and course datum inputs of an
autopilot.
BENDIX KING KI525A EMULATION
ACU HSI TYPE = 0
1
DATUM
SCALING
2
REFERENCE
VOLTAGE
ACU P3-23
DESCRIPTION
(with ACU DATUM = NORMAL)
HDG
ACU P3-22
500mVdc
per degree
up to a
maximum
angle of 30⁰,
or 15Vdc.
15Vdc
500mVdc per degree up to a maximum angle of
30⁰, or 15Vdc. The output remains at +15Vdc from
31⁰ to 180⁰. At 181⁰ it switches to -15Vdc.
Likewise for negative angles (HDG bug left of the
lubber line) the gradient is -500mVdc per degree
up to -30⁰. The output remains at -15Vdc from
-31⁰ to -179⁰. At 180⁰ it switches to +15Vdc.
CRS
ACU P3-3
167mVdc
per degree
up to 90⁰, or
15Vdc.
15Vdc
167mVdc per degree up to 90⁰, or +15Vdc. From
91⁰ to 180⁰ the output diminishes by 167mVdc per
degree, reaching 0Vdc at 180⁰. For negative angles
(CRS pointer left of the lubber line) the gradient is
-167mVdc per degree up to -90⁰. From -90⁰ to
-179⁰ the output diminishes by 167mVdc per
degree reaching 0Vdc at 180⁰.
1
Datum outputs are in reference to ACU P3-11, ACU reference ground.
2
15Vdc reference may come from ACU P3-9, ACU +15Vdc Out.
Table 8-5: KI525A Emulation Specifications
8.2.5.8 NSD-360 Heading and Course Datum Output
Emulated NSD-360 outputs to drive the heading and course datum inputs of an
autopilot.
NSD-360 EMULATION
ACU HSI TYPE = 1
1
DATUM
SCALING
2
REFERENCE
VOLTAGE
ACU P3-23
DESCRIPTION
(with ACU DATUM = NORMAL)
HDG
ACU P3-22
167mVdc per
degree up to
90⁰, or
15Vdc.
15Vdc
Reference
voltage may
be any
positive DC
or AC
reference
voltage
Assuming a reference voltage of 15Vdc, the
gradient is 167mVdc per degree up to 90⁰, or
+15Vdc. From 91⁰ to 180⁰ the output diminishes
by 167mVdc per degree, reaching 0Vdc at 180⁰.
For negative angles (HDG Bug left of the lubber
line) the gradient is -167mVdc per degree up to
-90⁰. From -90⁰ to -179⁰ the output diminishes by
167mVdc per degree reaching 0Vdc at 180⁰.