3
AL-NSM Networx Signal Meter & AL-NSG Networx Signal Generator User's Guide
NSM MODE SELECTION
To cycle (scroll) through each Mode:
Press and hold
the left
SELECT
button (keep
pressed)…then press and release the right
STEP
button
to step through each individual Mode.
After
"
LOCATE LOCKS
", the selections repeat, starting
again at "
DL-WIN / CA LVL
".
Note:
The
NSM
powers
down if you press and hold the left
SELECT
button for
too long without pressing the right
STEP
button.
MODE DEFINITIONS
1. DL-WIN/CA LVL
Displays the signal strength received from a Networx
Gateway or received from an
NSG
(in the same units /
format displayed in DL-Windows or the CA3000 Card
Access software; see
SIGNAL LEVEL CHART
).
IMPORTANT:
The
higher
the number, the
stronger
the signal.
When the test signal is generated via the DL-Windows
"Gateway Signal Test Mode" feature:
GTW RX
= Signal level at which the Networx
Gateway receives the
NSM
data transmission signal.
LCK RX
= Signal level at which the
NSM
receives
the Networx Gateway data transmission signal.
TIP:
In a normal working system, these two num-
bers should be fairly close in value; if the values differ by
more than 10 to 12, there might an issue with the exist-
ing Networx Gateway.
When the test signal is generated via the
NSG
:
GTW RX
= Signal level at which the
NSG
re-
ceives the
NSM
data transmission signal.
LCK RX
= Signal level at which the
NSM
receives
the
NSG
data transmission signal.
A
typical
NSM
display in this Mode will look like this:
GTW Rx Sig 58
LCK Rx Sig 56
2. SIGNAL LVL dBm
This Mode is identical to the previous Mode, but ex-
pressed in dBm units (signal level relative to 1 milliwatt).
It is provided for those more familiar with signal readings
expressed using standard radio communication terminol-
ogy.
DBm units are expressed in negative numbers; therefore
the
higher
the negative number, the
weaker
the signal.
For example, a reading of -27 is stronger ("better") than
-55.
A
typical
NSM
display in this Mode will look like this:
GTW Rx
dBm -40
LCK Rx
dBm -38
See previous Mode for
GTW RX
and
LCK RX
defini-
tions; to assist in visualizing dBm units, see the chart in
the
USEFUL TIPS
section on page 6.
1. DL-WIN / CA LVL
2. SIGNAL
LVL
DBM
3. NOISE LEVEL DBM
4. SIGNAL
QUALITY
5. DISCOVER
LOCKS
6. TURN SOUND ON /OFF
7. LOCATE
LOCKS
Hold left button, press right
Hold left button, press right
Hold left button, press right
Hold left button, press right
Hold left button, press right
Hold left button, press right
Signal strength in "DL-Windows units"
(Higher Number = Stronger Signal)
POOR = Intermittent communication (not recommended).
FAIR = Useable, but occasional signal loss possible.
GOOD = Fully acceptable signal level.
EXCELLENT = Optimal signal level.
Don't forget to read the
USEFUL
TIPS
section on page 6 !
POOR
FAIR
GOOD
EXCELLENT
S I G N A L L E V E L C H A R T