MICRONETICS / 26 HAMPSHIRE DRIVE / HUDSON, NH 03051 / TEL: 603-883-2900 / FAX: 603-882-8987 WEB: WWW.MICRONETICS.COM
NMA W
I
F
I
N
OISE
M
ODULES
0.5 GH
Z TO
6 GH
Z
D
D
ESCRIPTION
ESCRIPTION
Micronetics NMA-WiFi series
products are specifically
designed to perform interfer-
ence tests for 802.11a,
802.11b and ISM products in
general. The Gaussian out-
put can simulate noise from
other ISM devices sharing
the same spectrum as well as
thermal noise. By setting up
an exact signal to interfer-
ence ratio, one can measure
bit error rate (BER) as well as
test how well the system
operates under real world
conditions in general.
The devices consist of a sta-
ble noise source and multi-
stage amplifier for high output
Gaussian noise output. The
units have a built-in voltage
regulator so output is stable
even if your supply voltage is
not. They can be ordered
with optional TTL control to
switch the noise off or on
from microprocessor control.
Lastly, the units are calibrated
for noise spectral density out-
put centered at each channel
so you know precisely your
interference signal level.
S
S
PECIFICATIONS
PECIFICATIONS
s
Operating Temperature:
-55 to +95oC
s
Storage Temperature:
-65 to +125oC
s
Supply Voltage:
+15 VDC
s
Temperature Stability:
.025 dB/oC
s
Output Impedance:
50 ohm
s
Peak Factor: 5:1
s
VSWR: 1.5:1 max.
s
Calibration data in dBm/Hz
MODEL*
FREQUENCY
NOISE OUTPUT LEVEL
FLATNESS dBm/Hz Min. dBm/Hz Max.
NMA-WiFi
2.4 GHz-2.5GHz
±0.8dB
-80.0
-75
NMA-WiFi5
5.1 GHz-5.4GHz
±0.8dB
-80.0
-75
NMA-ISM
0.5 GHz-6.0GHz
±4dB
-100
-92
Ordering: -TTL indicates TTL control
--C indicates special calibration
Example:
NMA-WiFi5-TTL-C
NMA W
I
F
I
O
UTPUT
C
HARACTERISTICS
Specification definitions:
Noise Spectral Density,
No is the noise power normalized to a 1 Hz bandwidth
expressed in units of dBm/Hz
Flatness
is specified over the given frequency range. It is the decibel difference
of the high peak to the low peak.
Min Output Level
is the threshold where the noise spectral density output must
not fall below anywhere within the frequency range.
Max Output Level
is the threshold where the noise spectral density output must
not fall below anywhere within the frequency range
_______________________________________
Calibration: Units are calibrated as noise spectral density output at spot frequen-
cies corresponding to the center frequency of each 802.11a and 802.11b fre-
quency. For Bluetooth or other ISM devices, specify the spot frequency points
you desire. Data is supplied as a tabular print-out and is available in space
delimitated text file format.
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