MAT800迈可尼斯MAT800可编程衰减器

MAT800 is a multi-functional ａnd all-out programmable attenuator that

is capable of controlling the attenuation of microwave signal at an

ultra-high speed.
◆Features
1. The arbitrary attenuation programs is possible
*128kwords built-in program memory
*Maximum 2μs switching （readout） speed
*Three readout modes of FREE, BURST ａnd GATE
*Setup of hold off period by the number of clocks or by time
2. The software for making attenuation program is a standard accessory
3. GP-IB ａnd RS-232C are equipped as standard accessories
4. Four models are prepared for every frequency band
*model A : 1.5 to 4.5GHz
*model B : 3.0 to 9.0GHz
*model C : 4.5 to 13.5GHz
*model D : 1.95 to 5.85GHz
5. The maximum attenuation is 80dB
6. The minimum step size of attenuation is 0.05dB

1. Attenuation mode 2. Attenuation
Select either manual setup or programmed setup.
* Refer to "Setting of attenuation". Set the attenuation. It is valid

in the manual mode. 0 to 80 dB in 0.05 dB steps.
3. Filter 4. Readout clock
Select switching response time of attenuator.
* Refer to "About a filter". Set readout clock of program memory.

External clock ａnd manual clock are available.
5. Program length 6. Program hold off period
Set program memory length. 8 to 131,072 words in one word step. Set

hold off period of program memory, that is, the time till the next

readout is started. Perform setup by number of readout clocks or by

time.
* Refer to "Setting of attenuation".
7. Readout mode 8. Setup
Set readout method of program memory from Free, Burst ａnd Gate. * Refer

to "Program readout mode". Set parameters of RS-232C or GP-IB.
9. External readout clock 10. Trigger input
Connector for input of external clock for reading program memory.

Connector for input of trigger signal for such read mode as Burst or

Gate.
* Refer to "Program readout mode".
11. SYNC output 12. Attenuator input / output
A signal synchronized with the top address of the program memory is

output.
* Refer to "Program readout mode". SMA connector for attenuator input /

output.

◆Setting of attenuation

Two methods are available for setup of attenuation ; manual or program.

Select one by "ATTEN MODE".
●Manual mode
Set the attenuation using the rotary encoder on the front panel.

Alternatively, perform setup from outside using RS-232C or GP-IB. The

setup parameters in manual mode are attenuation ａnd filter only.

M A N U A L 2 3 . 4 5 d B
3 0 μ s

●Program mode
Read the memory storing attenuation data transferred from the computer.

There are five parameters in the program mode ; readout clock, program

length, hold-off period, readout mode ａnd filter.

P R G M 1 0 k H z L : 1 3 1 0 7 2
P : 6 . 5 5 3 5 s F R E E 3 0 μ s

The program readout period is the period from address 0 of the memory

to address n （set by program length）. The program length can be set

between 8 ａnd 131072 words in one word step. When the program is read

up to address n, the attenuation data at address n is held for the hold

off period （set by number of readout clocks or by time）, ａnd on

termination of hold off period, the memory is read out from address 0

again.

About a filter
CR filter is inserted in the attenuation controlling line. Use when it

is required to smooth the change at the moment of switching

attenuation. However, it is necessary to pay attention to the relation

with the readout clock. An appropriate filter value is normally 1 / 2

to 1 / 8 of the clock period.

◆The method of a program
When it is necessary to use the program mode, input the program

（waveform） on a Windows computer using "Software for making attenuation

program", which is provided as a standard accessory. Then transfer this

attenuation data to the memory of MAT800 using RS-232C or GP-IB.

Readout clock, program length, hold off period, readout mode ａnd filter

are set from the computer. Of course it is possible to set by keys on

the front panel. Connect external clock ａnd trigger signal as required.
● Waveform creation
1. Standard waveforms input
The nine types of standard waveforms are prepared. They are sine wave,

triangle wave, square wave, ramp wave, sinX / X, （1-ε-ax）, ε-ax white

noise ａnd DC.
2. Straight line input
Two specified points are linked together by means of a straight line.
3. Arithmetic calculation input
A waveform is created by arithmetic calculation of addition,

subtraction, clipping, absolute, mirror, smoothing, resize ａnd offset.
4. One-point input
A waveform is created through input of one point at a time.

● Waveform editing ａnd file management
Waveform editing ａnd file management may be performed using CUT, COPY,

PASTE ａnd UNDO
◆Program readout mode

Three program readout modes are available ; Free, Burst ａnd Gate.

Readout is executed regardless of the trigger signal in the Free mode.

In the Burst mode, the readout of program memory is started at the

rising edge of the trigger signal, the attenuation data of the

terminating address is held until the next activation. Therefore, setup

of the hold off period is not permitted in the Burst mode.
In the Gate mode, one set of the readout of program memory ａnd hold off

period is repeated while the trigger signal is of a high level. The

last attenuation data is held when the trigger signal goes down to a

low level ａnd then address n of program memory is read out.
With wireless communication equipments, W-CDMA, CDMA, GSM, PDC, PHS,

ETC, wireless LAN ａnd Bluetooth, the transmission power changes due to

obstacles ａnd multi-paths besides theoretical space losses, when the

radio wave is transmitted through the space. This changing pattern can

be simulated using MAT800 ａnd the communication quality can be

evaluated. This changing pattern can be easily created using "Software

for making attenuation program". It will be very convenient if our

"Shielding box ME8661A" is used for this test.

◆Specification

model A model B model C model D
Frequency range 1.5 to 4.5GHz 3.0 to 9.0 GHz 4.5 to 13.5GHz

1.95 to 5.85GHz
VSWR < 1.5 @ 2 to 4GHz
< 2.0 @ 1.5 to 4.5GHz < 1.7 @ 4 to 8GHz
< 2.2 @ 3 to 9GHz < 1.8 @ 6 to 12GHz
< 2.2 @ 4.5 to 13.5GHz < 1.6 @ 2.6 to 5.2GHz
< 2.1 @ 1.95 to 5.85GHz
Insertion loss
（0dB setting） < 2.3dB @ 2 to 4GHz
< 2.6dB @ 1.5 to 4.5GHz < 3.0dB @ 4 to 8GHz
< 3.3dB @ 3 to 9GHz < 3.5dB @ 6 to 12GHz
< 3.8dB @ 4.5 to 13.5GHz < 2.6dB @ 2.6 to 5.2GHz
< 2.9dB @ 1.95 to 5.85GHz

Attenuator
Setting range
Setting resolution
Accuracy
（at center of frequency range
ａnd +10dBm input）



Impedance
Filter
Maximum input level
Input damage level

Input / output connector
Readout clock input
Input level
Maximum frequency
Input impedance
Minimum pulse width
Input damage level
Connector
Trigger input
Input level
Input impedance
Minimum pulse width
Input damage level
Connector
SYNC output
Output level
Rise / Fall time
Output impedance
Connector
0 to 80dB
less than 0.05dB
less than ±0.5dB @ 0 to 10dB
less than ±0.8dB @ >10 to 30dB
less than ±1.0dB @ >30 to 50dB
less than ±1.5dB @ >50 to 64dB
less than ±2.0dB @ >64 to 74dB
less than ±3.0dB @ >74 to 80dB
50ohm nominal
1μs to 3ms, 1-3 step
100mW @ CW or peak power
0.8W @ average power
20W @ peak power of 1μs pulse
SMA

TTL level
500kHz
10kohm ±5%
more than 200ns （both of high ａnd low）
±20V （DC + ACpeak） max
BNC

TTL level
10kohm ±5%
more than 1μs
±20V （DC + ACpeak） max
BNC

TTL level
less than 100ns
approx. 100ohm
BNC

◆Functions

Attenuation mode
Program mode
Program length
Readout clock
Internal clock
External clock
Manual clock
Hold off period
Clock setting

Time setting
Read mode
Backup of program Manual ａnd Program

8 to 131072words, （available for setting in one word step）

100Hz to 500kHz, 1-2-5 step
DC to 500kHz
Due to pressing ENTER key

0 to 65535 clocks of readout clock
（available for each clock）
0 to 6.5535sec （by 100μs step）
Free, Burst, Gate
Program data is automatically saved when turning off.

◆Software for making attenuation program

Effective OS
Making waveform
Standard waveform
Waveform type

Parameter




Straight line
Calculation

One point input
Editing of waveform
File
Windows95 / 98 / Me / 2000 / XP


Sine, Triangle, Square, Ramp, sinX / X, （1-ε-ax）,
ε-ax, White noise ａnd DC
Data size, Attenuation （except DC）, Offset,
Cycle （except White noise ａnd DC）, Phase （°）
（except White noise ａnd DC）, Duty ratio （%）
（only Square wave）, Zero cross （only sinX / X）,
Attenuation ratio （ （1-ε-ax） ａnd ε-ax）
Link two points with line
+, -, ×, Clipping, Absolute, Mirror, Smoothing,
Resize, Offset
Input each point
Cut, Copy, Paste, Undo, Delete
New, Open, Close, Save, Save as, Data import,
Data export, Print, Printer setup, Transmit, Exit

◆Others

Display
Interface
RS-232C
Baud rate
GP-IB
Address LCD （20characters × 2columns）

Standard Accessory
2,400 to 57,600
Standard Accessory
0 to 30

◆General

MICRONIX Corporation receives the right to make changes in design,

specification ａnd other information without prior notice.

Operating temperature
Operating humidity
Storage temperature
Power Supply

Weight
Dimensions
Standard accessories 0 to 40°C （Guaranteed at 23 ±5°C）
less than 40°C / 80%RH （Guaranteed at less than 28°C / 80%RH）
-10 to +60°C / less than 80%RH
90 to 132VAC / 180 to 250VAC
（selectable by a switch located on rear panel）
approx. 4.5kg
260 （W） × 115 （H） × 360 （D） mm （excluding projections）
Instruction manual （1pc）, Power cable （1pc）, Fuse （1pc）,
FD for making attenuation program （1pc）, RS-232C cable （1pc）

◆Optional

GP-IB cable
Ｃoaxial cable
Ｃoaxial cable
Ｃoaxial cable
Fixed microwave attenuators
50 ohm termination ＭＩ200
MC201
MC202
MC203
（1 to 10, 12, 13, 15, 20dB）
（SMA）