Escort 3136A - Page 103

99
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dBm (decibel calculation)
Reference Impedance
(1)
2Ω
4Ω
8Ω
16Ω
50Ω
75Ω
93Ω
110Ω
124Ω
125Ω
135Ω
150Ω
250Ω
300Ω
500Ω
600Ω
(2)
800Ω
900Ω
1000Ω
1200Ω
8000Ω
(1)
Reference impedance is selectable at setup mode or during measurement. Please refer
to the chapter for related operation.
(2)
Default reference impedance
Range and Accuracy
Accuracy (dB) Voltage
Range
(1,2)
Input Voltage
dBm
(3)
Range
@ 600Ω Ref
30 to50 Hz 50 to10k Hz 10k to 100k Hz
500mV
5V
50V
500V
25mV ~ 500mV
500mV ~ 5V
5V ~ 50V
50V ~ 500V
-29.82 ~ -3.80
-3.80 ~ 16.20
16.20 ~ 36.20
36.20 ~ 56.20
0.3
0.2
0.2
0.2
(5)
0.3
0.2
0.2
0.2
0.7
0.5
0.5
0.5
(5)
1000V (dc)
750V (ac)
500V ~ 1000V
500V ~ 750V
56.20 ~ 62.22
56.20 ~ 59.72
Not
Specified
0.2
(4)
Not
Specified
(1)
Auto-ranging is used when dBm function is selected
(2)
In Vdc 1200V range and Vac 1000 V are readable
(3)
Reading displayed in dB when REL modifier is used
(4)
For input voltage at frequency between 50Hz to 1kHz
(5)
Input Voltage < 200V rms.
• 0dBm: 1 mW @ 600Ω Reference Impedance
• Resolution: 0.01dB for all ranges.
• CMRR: > 90dB for dc signal
• Response Time: Same as dc, ac or ac+dc voltage measurements.