Anritsu Spectrum Master MS2721A Maintenance Manual page 26

Test Power Level (dBm)
@ 50 MHz
0
–4
–10
–14
–20
–24
–30
–34
–40
–44
–50
Table 8. Level Accuracy vs Input Power Level Test Setting
NOTE: To maintain test setup integrity, do not disconnect Sensor B, the splitter or the attenuator pad.
f. Measuring the Unit for Accuracy vs Input Power Level
1. Remove Sensor A, add the adapter and connect it to the Spectrum Master as shown in Figure 3.
2. On the power meter, press the
50 MHz for the Input Signal Frequency. This sets the power meter to the proper power sensor cal factor. Press
the key to display the power reading.
Sensor
3. Set the MG3692A output to 50 MHz CW.
4. Connect the external power supply (Anritsu part number 40-168) to the Spectrum Master.
5. On the Spectrum Master, press the
ment to the default starting conditions.
NOTE: Before continuing, allow a 30-minute warm up for the internal circuitry to stabilize.
6. Press the
Freq
7. Use the keypad to enter 50 and select the
8. Press the
BW
9. Use the keypad to enter 1 and select the
10. Press the
VBW
11. Press the
Span
12. Press the
Amplitude
13. Use the keypad to enter 10 and press the
14. Press the
Atten Lvl
22
key and then the
Sensor
Shift
key and select the
Center Freq
soft key and the soft key.
RBW
kHz
soft key and use the keypad to enter 10, then select the
key, use the keypad to enter 10, and select the
key and select the
Reference Level
soft key and enter 30, then press the
Required Sensor B Reading
soft key. Select the
CalFactor
key, the (1) key, and then the
Preset
soft key.
soft key.
MHz
soft key.
soft key.
kHz
soft key.
soft key.
dBm
soft key.
dB
soft key and enter
FREQ
soft key to reset the instru-
Preset
soft key.
Hz
Spectrum Master MM