1.接收制式:

receiving system:tdmb

2.輸入阻抗：

inputimpedance：75ωunbalance

3.中頻頻率：

intermediatefrequency:36.0mhz

4.頻率覆蓋范圍：

  frequency coverage

band

frequency(mhz)

low band

46 mhz ~ 158 mhz

mid band

158 mhz ~ 446 mhz

high band

446 mhz ~ 862 mhz

5.使用和測試條件：

use and testconditions:

6． 各端子電壓電流:

   voltage& current at each terminal:

端子名稱

terminal name

端子電壓

terminalvoltage

端子電流

current

rf agc

0.3v～4v

vcc

4.75v～5.25v

200ma

if agc

0v～3.5v

 7.電氣指標(biāo)

electrical data             

s/n

參數(shù)(parameter)

min.

typ.

max.

unit

7.1

功率增益

power gain

―vhf low

―vhf high

―uhf

38

38

38

43

43

43

—

—

—

db

7.2

增益差

gain taper

―vhf low

―vhf high

―uhf

—

—

—

—

—

—

8.0

8.0

8.0

db

7.3

agc控制范圍

rf agc control range

if agc control range

40

50

60

50

db

7.4

噪聲系數(shù)

noise figure

―vhf low

―vhf high

―uhf

—

—

—

5.5

5.5

6.5

8.0

8.0

9.0

db

7.5

天線輸入端電壓駐波比

antenna input vswr

―vhf low

―vhf high

―uhf

—

—

—

2.5

2.5

2.5

7.0

7.0

7.0

7.6

鏡象抑制比

image rejection

―vhf low (under 300mhz)

―vhf high (under 300mhz)

―uhf

55

55

50

60

60

55

—

—

—

db

7.7

本振停振電壓

local frequency stop voltagebm

4.0

v

7.8

中頻抑制比

if rejection

60

—

—

db

7.9

相位噪聲

phase noise

1khz

10khz

100khz

-55

-80

-95

dbc

7.10

Zui大輸入信號電平

the max input signallevel

100

—

—

dbμv

7.11

輸入端本振干擾電壓

osc. voltage at input

f≤1000mhz

f＞1000 mhz

—

—

—

—

46

52

dbμv

"供應(yīng)高頻頭DTMB9VM-40系列"的是否提供加工定制為是，品牌是CDT，型號為CDT-9VM32J-40，種類是調(diào)諧器