参数资料
型号: 2650
厂商: B&K Precision
文件页数: 33/75页
文件大小: 0K
描述: SPECTRUM ANALYZER 3.3GHZ HANDHLD
标准包装: 1
系列: 2650
类型: 工作台/手持型
频率范围: 50kHz ~ 3.3GHz
放大(级别)范围: -60 ~ +10dBm
特点: 自动微调,RS232 端口,保存/载入
包括: 电池,电源,袋
相关产品: MB400-ND - BATTERY FOR 2650A/2652A/2658A
MA400-ND - ADAPTER 120V 60HZ AC FOR 2650A
LC2650A-ND - CARRY CASE FOR 2650A/2652A/2658A
M406-ND - ANTENNA DIPOLE 4.7 TO 6.2 GHZ
M405-ND - ANTENNA DIPOLE 300 TO 500 MHZ
M404-ND - ANTENNA DIPOLE 2.25 TO 2.65 GHZ
M403-ND - ANTENNA DIPOLE 1.7 TO 2.2 GHZ
M402-ND - ANTENNA DIPOLE 1.25 TO 1.65 GHZ
M401-ND - ANTENNA DIPOLE 0.8 TO 1.0 GHZ
其它名称: BK2650
9.4 Relation between the reference level and ATT · AMP (in dBm indication)
The programmable attenuator (ATT) and the input amplifier (AMP) inside 2650/2658 are automatically
set according to the setting value of the reference level (REFER). (ATT cannot be set independently.)
REFER
(dBm)
10
9
8
7
6
5
4
3
2
1
0
-1
ATT
(dB)
25
24
23
22
21
20
19
18
17
16
15
14
AMP
(dB)
0
0
0
0
0
0
0
0
0
0
0
0
REFER
(dBm)
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
ATT
(dB)
12
11
10
9
8
7
6
5
4
3
2
1
AMP
(dB)
0
0
0
0
0
0
0
0
0
0
0
0
REFER
(dBm)
-16
-17
-18
-19
-20
-21
-22
-23
-24
-25
-26
-27
ATT
(dB)
20
19
18
17
16
15
14
13
12
11
10
9
AMP
(dB)
21
21
21
21
21
21
21
21
21
21
21
21
REFER
(dBm)
-29
-30
-31
-32
-33
-34
-35
-36
-37
-38
-39
-40
ATT
(dB)
7
6
5
4
3
2
1
5
4
3
2
1
AMP
(dB)
21
21
21
21
21
21
21
26
26
26
26
26
-2
13
0
-15
0
0
-28
8
21
* When the input signal level is higher than the suitable level for 1st mixer’s terminal, it generates
harmonics distortion and spurious. 2650/2658 is designed so that the input signal level of 1st mixer is
determined to proper level by the reference level.
9.5 Setting the offset level
1.
F5
to set the offset of reference level.
When amplifier and attenuator are used externally, display level can be matched by offset.
The setting range is from -50.0 to 50.0dB (0.1dB step).
Offset is calculated to the reference level, and it is displayed.
* When offset is set, it is displayed on LEVEL display area as “OFS”.
Furthermore, the value of a marker point is displayed reflecting the calculated offset.
* Offset of dBμV, dBmV, dBV, W, etc. are changed automatically.
– 27 –
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