ARMA-K100-CRM
19
TABLE 9
: DISCRETE INTERFACE (J3) – PINS ASSIGNMENTS
Name
Type
Pin #
Active condition
PWRON_S
output (active closed)
1
Indicates controller power is on.
RFMUT_S
output (active closed)
2
Indicates RF output is muted (i.e. off).
ALARM_S
output
(active open)
3
Indicates operation with degraded performance.
Caused by: base plate temperature > 70°C but < 80°C,
or internally detected alarms.
FAULT_S
output
(active open)
4
Indicates major failure, operation is not possible.
Amplifier drain voltages are automatically turned off.
Caused by: base plate temperature > 80°C,
drain voltage > 13V or < 9V,
drain current > maximum rated + 20%,
load VSWR > 3.0:1, or internally detected faults.
RFOUT_S output (active closed) 5
Indicates
RF
output
power greater than 30 dBm.
REMOT_S
output
(active closed)
6
Indicates system control is via the remote Computer
I/F (CIF).
DISOU_C
output (common)
7
System output common.
RFENA_A
input (active closed)
8
Enables amplifier when connected to pin 15.
CIFRC_A
input (active open)
9
Enables remote Computer I/F (CIF).
GAIUP_A
input
(momentary closed)
10
To decrease attenuator setting, momentarily connect to
pin 15.
GAIDW_A
input
(momentary closed)
11
To increase attenuator setting, momentarily connect to
pin 15.
AUTOS_A
input
(active open)
12 * Enables automatic switch over to standby unit upon
fault detection. Alternate position is manual mode for
servicing.
SWTWG_A
input
(momentary closed)
13 * Waveguide switch toggle action to connect either unit
A or unit B to antenna port.
DISIN_C
input (common)
15
System input common.
SWTU1_S
output
(active closed)
16 * Normally closed, Form - C contact, when unit A is
connected to the antenna port.
SWTU2_S
output (active open)
17 * Normally open, Form - C contact, when unit A is
connected to the antenna port, in manual mode.
SWTUS_R
output (return)
18 * Form - C relay common.
STDBY_S
output
(active closed)
19 * Handshake signal indicating that the unit is in a stand-
by state. This implies that there are no faults or alarms
and that the unit is in auto mode.
