5MHZ-2GHZ RF noise signal source Signal generator Spectrum analyzer tracking Shielded for Ham Radio amplifier filter |

5MHZ-2GHZ RF noise signal source Signal generator Spectrum analyzer tracking Shielded for Ham Radio amplifier filter |

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Noise Signal Source NF-1000 Instruction Manual

I. Introduction

1 , the operating frequency range ( Frequency Range ): of
NF-1000 (5MHZ-2GHZ)

2. Output level range: -36dBm to -10dBm

3. Output level step: 0.05dB

4. Flatness: ± 0.5dB ( within 1GHZ )

5, power ( Power ): + 12V ( 150mA )

6. Dimensions: W * H * D = 82.8 * 28.8 * 108mm

7. Weight : less than 200g

8 , OLED display, key operation interface, with USB
interface ( provide communication protocol )

Accessories: 12V power adapter, SMA-Q9 wire accessory "12V
adapter

Second, the input and output description

1. Output port is noise signal output, frequency range:
(5MHZ-2GHZ) , flatness within 1G

2 , the input interface comprises a USB-B port input and the
DC-IN connector input

Operation

1 , S1 : Move the cursor to the right

S2 : Cursor position value minus

S3 : Confirmation (After the data is changed, you need to
press the confirmation button)

S4 : cursor position value plus

S5 : Move the cursor to the left

Every time you need to change the output frequency or modify
the output power, you should press S1 or S5 to jump to the
modifiable state. When the cursor is at the first (last)
position of a column, press S1 ( S5 ) to jump to another
column.



use

Because of its small size, light weight and easy to carry,
it can perform field calibration, maintenance on industrial
automation field instruments, and provide accurate noise
signal sources for outdoor measurement work.



1. When used as a tracking source, the S21 parameter of
filters, amplifiers, cables and other devices can be tested
with a spectrum analyzer, and the standing wave of an
antenna can be tested with a radio frequency bridge.

2. When used as a shield source, the output is connected to
a band-pass filter of the corresponding frequency and then
connected to a power amplifier.



Measured data spectrum

-10dBm output curve

-20dBm output curve

-30dBm output curve

Noise amplitude curve in 2GHz frequency range


Cooperate with spectrum analyzer to measure filter

6.1 Measuring 88MHZ to 108MHZ filter

6.2 Measuring 50MHZ to 100MHZ filters

6.3 Measuring 200MHZ to 300MHZ filters








Secondary development, serial communication protocol

The overall structure of the radio frequency signal source
series protocol adopts the command line mode, the
communication baud rate is 115200bps, the PC sends out the
command, the local machine parses and executes, and then
returns the result to the PC. The command is limited to
lowercase letters a~z, numbers 0~9 , The end symbol of each
command is a newline character (in hexadecimal notation is
"0x0a"), and the total length of the PC command is up to 15
characters (including 0x0a).

DDS series module communication commands include three types
of commands: w command, r command, and c command.

rid command: read version number

The PC sends "rid+ 0x0a", the machine returns the machine
model, and the return result is: ADF5355 (Note that the data
format of the machine model returned is in ASCII character
format, no need to judge the model, as long as it is
displayed, it will be OK).

wv0 command: set amplitude value

The format is: wv0xxxx + 0x0a, a total of 8 bytes;

Where "xxxx" is the attenuation value represented by 4
digits, such as:

wv01100+0x0a: indicates that the write attenuation is:
11.0+10.0=21.0DB (10DB needs to be added)