INSTALLATION MANUAL
CMA-5024 GLSSU
This document includes Proprietary Information and shall not be reproduced or communicated to third party
without prior written permission by CMC Electronics Inc.
Page 25
November 21, 2008
CHARACTERISTICS SPECIFICATION
PHYSICAL SPECIFICATIONS
Size
Weight
9.52” (24.18 cm) x 8.5” (21.59 cm) x 2.625” (6.67 cm)
5.5 lb max (2.5 kg max)
ELECTRICAL POWER INPUT
Main power input
(Pins J1-34 and J1-35)
Auxiliary 28 V HIS power input
(Pins J3-2 and J3-1)
+28 VDC nominal; +18 to 36 VDC, normal operation
Power-up transient: 3.0 A maximum for < 2 seconds
Steady state power consumption: 20 watts maximum (when
provisioned I/O are not connected and the outputs are not short-
circuited)
Voltage-reversal protection.
Same as above, except for a steady state power consumption of 5
Watts maximum and an inrush current of 2 A peak.
Notes:
a) Both power inputs should be connected to the same 28 VDC
source using distinct power line feeds when the "HIS Input Power"
APD parameter indicates that it is connected; to avoid the GLSSU
reporting an HIS power failure while the 28V HIS power is not
present.
b) The +28 Volt Return must be grounded to the airplane structure
and the airplane structure is considered to be the second wire.
ELECTRICAL POWER OUTPUT
From GLSSU
To GPS antenna, active
+9 VDC ± 20%, current load of 15mA minimum to 60mA maximum
via the center conductor of the RF input cable. Short-circuit
protected, 0.3 A maximum.
RELIABILITY
Operating Hours MTBF
40,000 hours AIC with an average ambient air temperature of 30
deg C
Figure 10. GLSSU Physical, Power and Reliability Specifications
The document reference is online, please check the correspondence between the online documentation and the printed version.
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