5-15
5.4 FIELD TEST POINT CONSIDERATIONS
The same basic rules apply to the 3SR/3SRV. Too much signal level
on the input of the unit can cause inconsistent sweep readings. The
forward telemetry level should be 0 dBmV ±12 dB on the input of
the 3SR. This again can be verified by checking the lower right
corner of the 3SR/3SRV display while sweeping forward. In-line pads
provide a quick way to reduce signal level on the 3SR/3SRV input.
Figure belowshows methods of connecting to amplifiers that have
either a single bi-directional or two-directional test points.
5.5 INSTALLATION OF MODEL 3HRV-- MULTI-USER REVERSE
SWEEP TESTING
While adding a 3HRV to the system, a few things need to be
remembered. The 3HRV has its own telemetry signal. This must be
set at a different frequency from that of the forward telemetry signal
in the 3ST, if both units are being used. Both telemetry frequencies
must be entered in the 3SRV. If you do not have places to enter both
S y
s tem Sw eep Recei ver M o
d el 3SR
LEVEL
TI LT
S CA N
S WEEP
C /N
H U
M
M O D
S P
E CT
F ILE
A UTO
S E
TUP
F R
E Q
C HA N
E NTER
F CN
C LE AR
h e
l p
st a
t us
a lpha
l i g
h t
a b
c
d e
f
g h
i
j kl
mno
p q
r
st u
v wx
y z
s pa ce
+ /-
1
2
3
4
5
6
7
8
9
0
x
.
H
L
H
L
Y
Y
Y
Amplifier Station
OUT
IN
SPLITTER
Sys tem S weep Rec eiver Mode l 3SR
LEVEL
TILT
SC A N
SW EEP
C /N
HUM
M O D
SPE CT
FI LE
A UTO
SETUP
FRE Q
C HA N
EN TER
FC N
C LE AR
hel p
stat us
al pha
l igh t
abc
def
ghi
j kl
mno
pqr
stu
vw x
yz
sp a ce
+/-
1
2
3
4
5
6
7
8
9
0
x
.
H
L
H
L
OUT
IN
Amplifier Station
Summary of Contents for 3SR
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