GW Instek GVT-427B - Manual (Page 7)

GVT-427B User Manual
12
4. The dB and dBm scales of the indicating meter are as
stated the following:
Range setting dB dBm
+40
+30
+20
+10
0
-10
-20
-30
-40
-50
-60
-70
+20
+10
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
to
to
to
to
to
to
to
to
to
to
to
to
+ 41
+31
+21
+11
+ 1
- 9
-19
-29
-39
-49
-59
-69
+20
+10
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
to
to
to
to
to
to
to
to
to
to
to
to
+43
+33
+23
+13
+ 3
- 7
-17
-27
-37
-47
-57
-67
GVT-427B User Manual
13
Specifications
This section contains a table of GVT-427B characteristics.
Table 1: Specifications
Model
Specification
GVT-427B
Channels Two
*Indicating Meter
(105mm in scale length)
2-Pointers (Black and Red)
Scale Values V
rms
value of sinusoidal wave,
dB value with 1 V as 0 dBm
dBm value with 1 mW
Range Select Mode Independent / tracking control mode for each
channel range
Voltage
Measurement
12 ranges: 300 µV, 1, 3, 10, 30, 100, 300 mV,
1, 3, 10, 30 and 100 V of full scale
Decibel Range 12 range: -70 to +40 dB in increments of 10
dB
Decibel Scale -20 to +1 dB ( 0 dB = 1 V ),
-20 to +3 dBm (0 dBm = 1 mW [ 600
Ω])
Voltage Accuracy Within ±3% of full scale at 1 kHz