参数资料
型号: 2658A
厂商: B&K Precision
文件页数: 32/89页
文件大小: 0K
描述: SPECT ANALYZER HANDHELD 8.5GHZ
标准包装: 1
系列: 2658
类型: 工作台/手持型
频率范围: 50kHz ~ 8.5GHz
放大(级别)范围: -60 ~ +10dBm
特点: 自动微调,保存/载入,USB 端口
包括: AC 适配器,电池,线缆,外壳,软件
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
* If the unit is changed to dBμV , dBmV, dBV or dBm, the offset is automatically changed.
2. By pushing
F3
, the step size of offset is changed. (10 dB, 1 dB, 0.1 dB)
9.6 Setting of Input Impedance
By pushing
F6
, the input compensation can be set to 50 Ω (no offset) or 75 Ω . (5.6 dB offset
compensation)
The reference level is adjusted automatically, based on the input impedance selection. When the input impedance
is set to 75 Ω , the reference level is displayed including offset and conversion of 75 Ω . For the amplitude reading to
be correct, a coaxial 50 Ω / 75 Ω impedance conversion adapter must be connected to the RF input.
* When “75 Ω” is selected, values in Amplitude axis setting values display area will change according to
75 Ω , and the offset is set to 5.7 dB (insertion loss of 50 Ω / 75 Ω adapter ). Moreover, the offset can be
changed.
When the unit at marker point is set to W, V, V/m or other, it is converted correctly from dBm.
* Be sure to attach a coaxial 50 Ω / 75 Ω impedance conversion adapter when selecting “75 Ω”
9.7 Reference Level Setting Range for Each Unit
Unit
Maximum
Minimum
Minimum
(shifted spectrum data)
dBm
10
-40
-60
dBμV
117
67
47
dBmV
57
7
-13
dBV
-3
-53
-73
“Available unit in measuring function”
Unit
dBμV/m (Electric field strength measurement)
dBμA/m
(Magnetic field strength
measurement)
Setting
Maximum
Minimum
M401
143
93
M402
146
96
M403
149
99
M404
150
100
M405
137
87
M406
159
109
CP-2S
160 ~ 203
110 ~ 153
Minimum
(shifted spectrum
73
76
79
80
67
89
90 ~ 133
data)
* When the reference level is set between “Minimum” and “Minimum (shifted spectrum data)”, the
spectrum of “Minimum” is shifted and displayed on the screen.
26
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