AWMA-C250
Page 29
5.3 RF O
UTPUT
M
ONITOR
P
ORT
This RF interface is located at J4 connector, ‘N’ Type, Female, on the connectors plate of each
unit. It is typically used for independent monitoring of SSPA output power levels through the use
of an external power meter
.
To determine the true output power in dBm, add the value measured
at the RF Output Monitor Port (J4) to the calibrated coupling factor corresponding to the specific
frequency. A table of coupling factor versus frequency can be found in the Test Data Sheet
provided with the SSPA.
R
H
J
M
K
L
N
G
V
U
T
F
E
D
C
B
FROM J3
DISIN_C
TO J3-M
OF 2-nd SSPA
TO J3-R
OF 2-nd SSPA
S
PWRON_S
RFMUT_S
ALARM_S
FAULT_S
RFOUT_S
REMOT_S
SWTU1_S
SWTU2_S
SWTUS_R
STDBY_S
DISOU_C
SWTWG_A
GAIDW_A
GAIUP_A
AUTOS_A
CIFRC_A
RFENA_C
GND
INTERFACE ON
GRN
YEL
GRN
YEL
RED
+12V
GRN
GRN
YEL
A
GRN
ALL RESISTORS
ARE 4.7 k
Figure 7
: Discrete Interface – Proposed Monitor and Control Circuit