ATOM Ka 25-50W BUC & SSPA
Revision 1.3
039092
16
039092_r1.3 - Operator Manual ATOM Ka
25-50W.doc
Table 2-4: ATOM Mute Control Behavior
Configuration
Mute Line
Polarity
Mute Line
Bias
Sample
Input 1
Sample Mute
State 1
Sample
Input 2
Sample Mute
State 2
Sample
Input 3
Sample Mute
State 3
Default
0V = Unmute
Pull-Down
0V
Unmuted
5V
Muted
Floating
Unmuted
Sample 1
0V = Unmute
Pull-Up
0V
Unmuted
5V
Muted
Floating
Muted
Sample 2
5V = Unmute
Pull-Down
0V
Muted
5V
Unmuted
Floating
Muted
Sample 3
5V = Unmute
Pull-Up
0V
Muted
5V
Unmuted
Floating
Unmuted
Note that the ATOM mute state can also be controlled through the M&C interface. The software mute
setting takes priority over the hardware pin. Refer to
RS-485 Port: Pins A, B, C, J, G
These five pins form a standard four-wire RS-485 serial port, with Rx+, Rx-, Tx+, Tx-, and serial port
ground. Since communication with the ATOM is only half duplex, it is possible to deploy the ATOM on a
two-wire RS-485 network by connecting the Tx+ & Rx+ and Tx- & Rx- wires together.
Tx+ and Tx- are the differential pair which carries a signal from the host computer to the unit. Rx+ and
Rx- are the differential pair which carries a signal from the unit to the host computer. Connect these to
the host computer RS-485 port accordingly.
RS-232 Port: Pins E, F, & G
These pins form a standard RS-232 serial port. Pin F carries a signal from the host computer to the unit
and Pin E carries a signal from the unit to the host computer. Pin G must be connected to the ground pin
on the host computer.
Ethernet Interface: Pins E, F, H, & K
These four pins form a standard 10/100Mbps Ethernet link.
to construct an Ethernet M&C cable to access the web interface.
Table 2-5: Ethernet Cable Pinout
ATOM
Connector
Twisted Pair
Cable
RJ-45
Connector
Description
F
Wht/Grn
1
Ethernet host computer Tx+ signal (signal into unit)
K
Grn
2
Ethernet host computer Tx- signal (signal into unit)
E
Wht/Org
3
Ethernet host computer Rx+ signal (signal out of unit)
-
Blu
4
-
-
Wht/Blu
5
-
H
Org
6
Ethernet host computer Rx- signal (signal out of unit)
-
Wht/Brn
7
-
-
Brn
8
-