ashtech HDS800, Reference Manual

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9
Receiver Description
Another function of the Scroll button is to re-activate the
screen backlight after the latter has automatically been
turned off. The Scroll button is also used in the firmware
update procedure.
Rear View
DC Power Input
A Fischer, three-contact, female connector [1] allowing the
HDS800 to be powered from either the provided AC adapter
(connect the cable extension between HDS800 and the end
of the AC adapter output cable), or an external 9- to 36-V DC
power source through cable P/N 730477 (cf. base setup
using an external radio transmitter).
GNSS Input #1 (Antenna #1)
A TNC coaxial female connector [2] allowing you to connect
the first GNSS antenna to the receiver via a coaxial cable.
Serial Data Ports
These are all Fischer, seven-contact, female connectors, each
allowing a serial connection to an external device..
• Ports F [3] and B [4] are both RS232-only ports
• RS232/422 Port A [5] is a switchable RS232/RS422 port
(Default is RS232).
As an option (installed at the factory), port A also delivers
a regulated DC power voltage between pin 1 (+12 V DC)
and pin 2 (GND) that can be used to power a connected
device. The DC current available is 0.5 A steady state, and
1.0 A peak.
[9] [3] [4] [5] [7] [1]
[6] [8] [2] [10]