Anritsu Rubidium MG362 1A Series, Maintenance Manual

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4-10 Power Level Accuracy and Flatness Tests Performance Verification
4-22 PN: 10370-10386 Rev. B MG362x1A MM
Power Level Accuracy (< –50 dBm)
Power level accuracy for power levels below –50 dBm is tested in two methods. First, by measuring the
MG362x1A’s RF output directly on a measuring receiver; second, by down converting the MG362x1A’s
RF output and measuring the down converted IF on a measuring receiver. In both cases, a reference power
level is set on the measuring receiver and the output power level is stepped down in 5 dB increments. The
relative output power level is then measured at each step.
Test Setup
For all power level measurements below –50 dBm, connect the equipment as shown in Figure 4-9 .
1. Ensure the ML2530A receiver is calibrated.
Perform the range cal for the following frequency points. The calibration should include ranges 1-3
with a bandwidth of 10 Hz.
• 8.51 MHz
• 10 MHz
• 15 MHz
• 60 MHz
• 500 MHz
• 600 MHz
• 1 GHz
• 2 GHz
2. For RF frequencies below 2400 MHz, connect the MG362x1A RF Output to the RF input of the measuring
receiver.
3. For RF frequencies above 2400 MHz:
a. Connect the RF Output of the LO and the MG362x1A to the mixer’s (PN: 60-114)
L-port
and
R-port
,
respectively, using low loss cables.
b. Connect the mixer’s
I-port
to the
RF input
of the measuring receiver.
4. Using a BNC tee, connect the
10 MHz reference
output from the measuring receiver to the MG362x1A’s
and local oscillator’s
10 MHz REF IN
connectors.
Figure 4-9. Equipment Setup for Power Level Accuracy and Flatness Tests Below –50 dBm
MG362x1A (DUT)
MG362x1A (LO)
Measuring Receiver
10 MHz
REF OUT
10 MHz
REF IN
Mixer
BNC Tee
Down Conversion Path
Through Path
N(m) to K(f)
Adapter
RF
Input
10 MHz
Reference In
Connect the dashed lines
as directed by the procedure.
Note: Make this connection as
short as possible by using an
M to M adapter.
ML2530A
ML2530A
Calibration Receiver
L
I
R
RF Output
50 Ω
RF On/Off
Unleveled
Output: +29 dBm max
Reverse: +27 dBm, 0 VDC
FREQ LEVEL USER
SELECT
0
1 2 3
4 5 6
7 8 9
MG36221A
Signal Generator
20 GHz
RF Output
50 Ω
RF On/Off
Unleveled
Output: +29 dBm max
Reverse: +27 dBm, 0 VDC
FREQ LEVEL USER
SELECT
0
1 2 3
4 5 6
7 8 9
MG36221A
Signal Generator
20 GHz