Vertex Standard VXR-9000-H Operating Manual page 10

DB-25 C
ONNECTOR
Pin 10, 13, 15, 16, 17, 18, 19, 21:
P I/O "0" ~ "7"
ROGRAMMABLE
The VXR-9000 provides eight ports (PIO)
that can be programmed for various
input or output signals, or for control
functions. Each port may be pro-
grammed as to its function, its status
(input or output), and its logic (for out-
put ports only).
Pin 11: NSQ DET
This is an open-collector, active-low output capable of
sinking about 10 mA. It indicates that the receiver
squelch is open. If the squelch control is properly set,
this indicates a carrier on the receiver channel.
Pin 12: EXT PTT
This input is internally pulled up to 5 VDC. When pulled
low by an external device, it keys the repeater trans-
mitter while the repeater is operating in the "Remote"
mode. Avoid voltage in excess of 5 V on this pin, or
internal damage to the microprocessor on the repeater
CNTL Unit may result.
Pin 14, 20: GND
Chassis ground for all logic levels and power supply
return.
Pin 22: RXD LOW
[ A
O DATA C
NALOG UTPUT FOR
( 300 ~ 3,000 Hz )
This pin is an output for low speed receiving data sig-
nals (typically 1200 bps), with the data being extracted
after the de-emphasis and low pass filter stages.
8
P
ORT
Pin I/O Port
10 6
13 7
15 4
16 3
17 2
18 1
19 0
21 5
]
OMMUNICATIONS
Pin 23: RXD HIGH
[ D
O
IGITAL UTPUT FOR
( Max.: 5 kHz )
This pin is an output for high speed receiving data sig-
nals (typically 9600 bps), with the data being extracted
immediately after the discriminator (prior to any de-
emphasis).
Pin 24: TXD LOW
[ A
I DATA C
NALOG NPUT FOR
( 300 ~ 3,000 Hz )
This pin is intended to be used as a low speed data
signal input to the repeater (typically 1200 bps). This
digital data signal is injected before the transmitter pre-
emphasis and limiting stages, so excess signal input
levels are clipped.
Pin 25: TXD HIGH
[ D
I
IGITAL NPUT FOR THE
( 0 ~ 5 kHz )
This pin is intended to be used as a high speed digital
data signal input to the repeater (typically 9600 bps).
This digital data signal is injected after the transmitter
splatter filter stage.
VXR-9000 FM R
EPEATER
FCC ID: K6610443250/IC ID: 511B-10443250
]
DATA C
OMMUNICATIONS
]
OMMUNICATIONS
DATA C
OMMUNICATIONS
O M
PERATING
]
ANUAL
Vertex Standard Co., Ltd.