User Manual

SIGLENT
28 SVA1000X Service Manual
Input Attenuation Error Test
Specification
Input Attenuation Error Test
<±0.5 dB
20 °C to 30 °C , fc= 50 MHz, preamp off, mixer level= -30 dBm
RF Generator
(SMB 100A)
RF OUT
Ref OUT
N-N
Power Meter
(NRP-Z91)
(a)
RF Generator
(SMB 100A)
RF OUT
Ref OUT
SVA1000X
RF IN
TG OUT
Ref IN
N-N
BNC-BNC
(b)
Figure 3-9 Connecting test instruments for Input Attenuation Error Test
Steps:
1. Connect the RF generator and power meter as figure 3-9(a) shows
2. Set the output frequency of the RF generator to 50 MHz and the amplitude
to -30 dBm. Observe the measurement value of the power meter. Adjust
the output amplitude of the RF generator until the reading of the power
meter becomes -30 dBm. Read the output amplitude from the RF generator,
record it as P
-30
.
3. Adjust the output amplitude of the RF generator until the reading of the
power meter becomes -25, -20, -15, -10, -5, 0 dBm respectively. Record
these values as P
-25
, P
-20
, P
-15
, P
-10,
P
-5,
and P
0
.