Power; Vdc Power Supply; Power Entry; Adsl Modem - Edgetech 4200 User Hardware Manual

The main hardware elements in the 701-DL Digital Link include the following components and circuit
boards:

2.1.3.1 Power

The Powerboard inputs +24 VDC on J1 from the 24 VDC Power Supply and generates the 400 VDC tow
vehicle power. This is output to the tow vehicle on J13, combined with the frequency shift keyed (FSK)
responder trigger signal input on J10, and the ADSL downlink command and uplink data signals. The
command signals are input, and the data signals are output on J14.
The Powerboard also includes +5, +12, and +15 VDC power supplies, where +12 VDC is output on J4 to the
fan and on J6 to the ADSL Modem board.

2.1.3.2 24 VDC Power Supply

The 24 VDC Power Supply inputs AC power from the Power Entry module to generate +24 VDC, which is
output to the Powerboard.

2.1.3.3 Power Entry

The Power Entry module filters the AC power and connects it to the 24 VDC Power Supply through the
front panel power switch.

2.1.3.4 ADSL Modem

The ADSL Modem board converts the uplink data ADSL signals that it receives from the tow vehicle via the
ADSL connector from the Power board into Ethernet 10/100BaseT signals. These signals are then output
to the user-supplied computer. Similarly, the ADSL Modem board converts the downlink Ethernet
10/100BaseT-based command signals from the user-supplied computer into the ADSL downlink command
signals. These command signals are then output on the ADSL connector to the Powerboard for
transmission to the tow vehicle. The ADSL Modem board also serves as an Ethernet switch to provide
Ethernet connections on J1 to the user-supplied computer, on J3 to the Wireless Router, and on J4 to the
Net Burner board on the Powerboard. This configuration places all of these devices on the same LAN. +12
VDC power is input on the DC connector from the Powerboard.

2.1.3.5 Net Burner

The Net Burner board mounts and connects directly to the Powerboard to provide Powerboard
diagnostics, tow vehicle power control, positive and negative trigger edge selection, and sensor
monitoring. An Ethernet connection to the Net Burner board is provided on J3 from the ADSL Modem
board. Power is input from the Powerboard.

2.2 4200 Series Tow Vehicle

The specifications for the 4200 Series Tow Vehicles are shown in
T 2-2.
ABLE
2-13