T6T VHF 100 W Transmitter
Page 24
Operation
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Mode 2 and Mode 3 Polarity Settings
Table 7 Mode 2 and Mode 3 Polarity Settings
Signal
Connector
Polarity set to STD
Polarity set to INV
Ready Out
Facilities, pin 13
An open collector grounded
output when the radio is ready
to transmit and no BIT faults
are detected.
An open collector high
impedance output when the radio
is ready to transmit and no BIT
faults are detected.
E-BIT In
Facilities, pin 2
TTL input. 0 V indicates an
external fault.
TTL input. 5 V indicates an
external fault.
External VSWR
Input
Facilities, pin 4
TTL input. 0 V active.
TTL input. 5 V active.
R e a d y
O u
t
S T D
E -
B I
T
I
n
S T D
E x
t
V S W R
I
n
S T D
E x
i
t
> >
B a c
k
E x
i
t
< <
Each of the three polarity settings applicable to
Mode 2 and Mode 3 can be set to the default STD
(standard) setting or INV (inverted).
The signal connections are detailed in
Table 7
along with the conditions when STD or INV is
selected.
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