Installation
82011-IM, REV J
Sandel SG102 & MT102 Installation Manual
Page 3-3
3.3.3 Cooling
No external cooling is required. The SG102 under normal operation will be warm to the touch.
3.3.4 Slaving Control Switches
In an existing Bendix/King replacement installation the KA51 slaving accessory may be used to
control the ‘slaving off’ mode. In new installations three switches may be installed if manual
slaving control is desired:
Slaving Off
GND to operate; maintained
CW
GND to operate; momentary
CCW
GND to operate; momentary
NOTE: The SG102 may be installed with one set of slaving
switches only; either a KA51 connected to the 44 pin
rectangular connector, or new switches connected to the 26
Pin D connector.
3.3.5 Operation without MT102
The SG102 will not operate without the MT102 connected. Any application which requires
operation without a magnetic reference will not work with the SG102.
Note: The SG102 will not initialize unless it has
communication with the MT102. The SG102 will
flag if communication is removed from the MT102
3.3.6 Inverter Outputs
The SG102 contains an internal sine wave inverter. The inverter load is limited to 5VA, which
is sufficient to drive two synchro transmitters.
3.3.7 Synchro Outputs
The SG102 contains an XYZ heading output. The XYZ output is limited to 50ma and is
sufficient to drive two synchro CT’s.
Note: The XYZ output operates at a nominal 10.5v RMS. This output is compatible with any
Arinc 407 CT specified for 11.8V.
3.3.8 Discretes
The SG102 has Valid GND/OPEN and Invalid GND/OPEN discretes.
NOTE: Since these outputs are both GND/OPEN, if the receiving device does not pull
up to ACFT PWR, a 10K 1/2W resistor may be used between the discrete output and
ACFT PWR as a pullup source.
