SATPAK-104PLUS-GBGRAM Datasheet (In pdf Format)
has been redesigned to accommodate a GPS module that incorporates Selective Availability
Anti-Spoofing Module (SAASM) technology for military applications. The
redesigned version of the SATPAK-104PLUS is designated the SATPAK-104PLUS-GBGRAM and will
accept a Rockwell-Collins Ground-Based GPS Receiver Applications Module (GB-GRAM) module
as a daughter-card. The combination of the SATPAK carrier and the
GB-GRAM occupy one location in a PC/104 stack.
SATPAK-104PLUS-GBGRAM communicates with the COM1 communication channel of the GB-GRAM
receiver by using a 16550 universal asynchronous receiver/transmitter (UART).
The UART converts the serial CMOS data required by the GPS receiver to parallel
data required by the PC/104 protocol. Simple low-profile push-on
jumpers are used to configure the SATPAK-104PLUS for standard base addresses (COM1, COM2,
COM3, COM4) and any of the available bus interrupt lines (IRQ3-IRQ7, IRQ10-IRQ12, IRQ14,
or IRQ15). The J2 pass-through connector option must be installed
to access interrupt request signals IRQ10-IRQ12, IRQ14, and IRQ15. Custom
programmable logic is available if the user must decode base addresses other than those
supported by the standard serial communication addresses. A
linear regulator provides the 3.3 VDC required by the GB-GRAM. An
on-board rechargeable lithium battery is used to
preserve cryptovariables, maintain the low-power time source, and maintain non-volatile
RAM. A two-contact latching connector is provided if an external
battery source is desired.
A 10-pin header is
provided to access additional communication and timing signals on the GB-GRAM.
The COM2 and bi-directional data port (BDDP) transmit and receive signals from the
GB-GRAM are available on right-angle header P3. The COM2 and BDDP
signals are converted from CMOS to RS-232 voltage levels. Additionally,
RS-232 signal levels for COM1 are available on right-angle connector P3.
A HAVEQUICK output and COM1 time pulse output originating on the GB-GRAM are also
available on header P3.
Two separate 5-contact latching connectors located on the component-side of the SATPAK-104PLUS-GBGRAM are provided for DS-101 and DS-102 key fill ports. DS-101 and DS-102 signals are directly routed to the GB-GRAM without interruption or connection to any other component. A discrete zeroize signal is routed to the P3 header. The zeroize signal is also directly routed to the GB-GRAM without interruption or connection to any other component.