Chp 1 introduction, Equipment, Transmit levels – Comtech EF Data MIDAS Transmit and Receive Levels User Manual
Page 11
Transmit and Receive Levels, Guide, Rev.0
Introduction 1
1111
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....
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IIII
IIIIIIII
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nnnnnnnn
tttt
tttttttt
rrrr
rrrrrrrr
oooo
oooooooo
dddd
dddddddd
uuuu
uuuuuuuu
cccc
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Introduction 1-1
Equipment 1-1
Transmit Levels
1-1
Receive Levels
1-2
I
I
n
n
t
t
r
r
o
o
d
d
u
u
c
c
t
t
i
i
o
o
n
n
The transmit and receive levels diagram is to ensure that the proper gains and
attenuations in the TX and RX paths are recorded for future use in
troubleshooting.
E
E
q
q
u
u
i
i
p
p
m
m
e
e
n
n
t
t
1 Satellite
Modem
1
Spectrum analyzer
For C-band: HP8561E or equivalent
For Ku-Band: HP8593E or equivalent
T
T
r
r
a
a
n
n
s
s
m
m
i
i
t
t
L
L
e
e
v
v
e
e
l
l
s
s
Procedure
Connect a modem at the beginning of the Tx path. Generate a CW, making sure not
to exceed the EIRP in the earth station so the satellite won’t be saturated.
Measure and record the levels of the CW across the Tx path as specified in the
following diagram.