Anritsu VNA Master MS2026C Maintenance Manual

Assembly Removal and Replacement, MS202xC 6-18 Replacing VNA PCB Assembly
MS20xxC MM PN: 10580-00307 Rev. D 6-35
11. Remove the castellated BNC dress nut from the Ext Ref Input BNC connector from the top connector
panel. Install the BNC connector and its coaxial cable on the top connector panel of the new VNA PCB
Assembly.
12. Remove the castellated BNC dress nut from the Ext Trig Input BNC connector from the top connector
panel. Install the BNC connector and its coaxial cable on the top connector panel of the new VNA PCB
Assembly.
13. Remove the 26 MHz cable from the VNA Module. Attach one end of the cable to the MCX connector on the
top shield of the VNA Module of the new VNA PCB Assembly. Refer to item 6 in Figure 6-16
on page 6-34.
14. If equipped with the GPS Receiver Module (Option 31), then remove the hole plug for the GPS Antenna
from the top connector panel. Refer to item 7 in Figure 6-15 on page 6-33.
15. If equipped with the Power Monitor (Option 5), then remove the hole plug for the Detector from the top
connector panel prior to installing the PCB as described in the following steps. Refer to item 4 in
Figure 6-15 on page 6-33.
Installing the Replacement VNA PCB Assembly:
16. If the GPS Receiver Module PCB (Option 31) is installed, then ensure that its antenna cable is out of the
way.
17. Position the replacement VNA PCB Assembly above the top case and above the Mother Board with the
lower edge of the Mother Board and the connectors exposed.
18. Attach the cable from the MCX Connector (J7002) in the top shield of the replacement VNA PCB
Assembly to MCX Connector J2201 on the Mother Board. Refer to item 6 and item 9 in Figure 6-16
on page 6-34.
19. Route the cable from the Ext Ref Input connector through the notch to the Main PCB and attach it to the
J2200 Ext Ref In MMXC connector.
20. Route the cable from the Ext Trig Input connector through the notch to the Main PCB and attach it to the
J3202 Trig In MMXC connector.
Installing the GPS Antenna SMA Connector (Option 31):
If the GPS Receiver Module PCB (Option 31) is not installed, then skip ahead to Step 21. If the GPS Receiver
Module PCB is installed, then perform the following sub steps:
a. Route the GPS Antenna Cable (with its SMA connector from the Main PCB) through the notch
between the top connector panel and the PCB, and into its position in the top connector panel.
b. Install the lock washer and then the nut.
c. Use two 5/16 inch (~8 mm) wrenches to attach the GPS Antenna SMA connector to the top
connector panel. Torque the nut to 7.5 lbf·in (0.85 N·m).
21. Carefully position the VNA PCB Assembly over the Main PCB and the eight (8) hex standoffs.
22. Fasten the VNA PCB Assembly into place using eight (8) Phillips-head screws. Torque these screws to
7.5 lbf·in (0.85 N·m).
Installing the Power Monitor PCB, Option 5:
23. If the Power Monitor PCB (Option 5) is not installed, then skip ahead to Step 24. If the Power Monitor
PCB is installed, then perform the following sub steps:
a. Insert the Detector connector with the Flex Cable into the Detector hole on the top connector
panel.
b. The Flex Cable must oriented above the Connector. Reinstall and tighten the two M3 x 0.5 Kep
Nuts using the 5.5mm angled-head open end wrench. Tighten firmly. These nuts have no torque
specification.
c. Carefully position the Power Module Assembly over its mounting standoffs.
d. Use extreme care so as to not bend any of the header pins.

Anritsu VNA Master MS2026C Specifications

General

Brand	Anritsu
Model	VNA Master MS2026C
Category	Measuring Instruments
Language	English