Anritsu VectorStar ME7838D User manual

Quick Start Guide
VectorStar™ME7838D/G
2-Port Broadband/Banded
Millimeter-Wave System
High Performance Modular Broadband/Banded Millimeter-Wave
Vector Network Analyzer (VNA) Measurement System,
70 kHz to 145 GHz (150 GHz) or 70 kHz to 220 GHz (226 GHz)
ME7838D, 70 kHz to 145 GHz (150 GHz)
ME7838G, 70 kHz to 220 GHz (226 GHz)
ME7838D BB/mm-Wave VNA System – MS4647B VNA, 3739C Test Set, MA25300A Modules
ME7838G BB/mm-Wave VNA System – MS4647B VNA, 3739C Test Set, MA25400A Modules
Anritsu Company
490 Jarvis Drive
Morgan Hill, CA 95037-2809
USA
http://www.anritsu.com
Part Number: 10410-00732
Revision: C
Published: January 2020
Copyright 2020 Anritsu Company. All rights reserved.

1. Installing Rear Panel Cables (MS464xA VNA)
QSG-2 PN: 10410-00732 Rev. C VectorStar ME7838D/G QSG
High Performance Modular Broadband/Banded Millimeter-Wave
Vector Network Analyzer (VNA) Measurement System,
70 kHz to 145 GHz or 220 GHz
This guide provides quick setup instructions for the ME7838D/G Broadband/Banded mm-Wave VNA System
assembly. For additional safety and compliance information, and for more details about the assembly,
configuration, setup, and test of the equipment, refer to the VectorStar™ ME7838 Series
Broadband/Millimeter-Wave System Installation Guide – 10410-00293.
This and all other documentation that supports the ME7838D/G is available on the VectorStar product web
page:
http://www.anritsu.com/en-us/products-solutions/products/ms4640b-series.aspx
On this web page, you can select various tabs for more information about your instrument. Included is a
“Library” tab which contains links to all the latest technical documentation related to this instrument.
The ME7838D/G Broadband system consists of the MS4647B VNA with Option 007 (Receiver Offset),
Option 08x (Modular Broadband Connection Capability), the 3739C Broadband Test Set, two MA25300A or
two MA25400A Millimeter-Wave Modules, and the necessary front and rear panel cables. A fully configured
system is shown below.
The ME7838D/G Banded Millimeter-Wave system consists of an MS464xA/B VNA with Option 08x, the 3739C
Broadband Test Set, and two 3744A-EE, 3744A-EW, or two OML/VDI Millimeter-Wave Modules.
1. Installing Rear Panel Cables (MS464xA VNA)
The MS4647A VNA can be used in the ME7838D-based systems only.
This section focuses on installing cables when using a MS464xA VNA. Start the ME7838D assembly by placing
the 3739C Broadband Test Set so you can access the rear panel for cable connection.
Warning To avoid injury, use two or more people to lift the MS464xA VNA to the top of the 3739C Test Set.
Caution
To avoid connector damage or inaccurate measurements, before making any connections, review
the 10100-00060-Connector Care Instruction Sheet. Observe connector torque requirements where
indicated in this guide.
Note The MS4647A software does not support the ME7838G system.

1. Installing Rear Panel Cables (MS464xA VNA)
VectorStar ME7838D/G QSG PN: 10410-00732 Rev. C QSG-3
At the rear panels connect the cables as shown in Figure 1 and Table 1.
Figure 1. Install Rear Panel Cables between 3739C Test Set and MS464xA VNA
WARNING
No operator service-
able parts inside.
Refer servicing to
qualified personnel.
Ext
Alc
Out
Ext
Analog
In
a1ba2b2
IF Outputs
External I/O
~ LINE INPUT
47-63 Hz
85-240 VAC
150 VA Max
Fuse 250V 2A T
CAUTION
Do not operate with
power cord ungrounded.
CAUTION
For continued fire protection
replace only with specified
type and rated fuse.
Cable Length
Standard Extended
Module Interface
MS464xA VNA
1
2
3
4
6
7
10
11
8
9
3739C Test Set
b1 IF a2 IF a1 IF b2 IF
Ext Analog Out Ext ALC External I/O
Ext Analog In
Ext ALC Out
External I/O
3
5
6
4
Module Interface
Cable Length Switch
12
5

1. Installing Rear Panel Cables (MS464xA VNA)
QSG-4 PN: 10410-00732 Rev. C VectorStar ME7838D/G QSG
Table 1. ME78383D Cable Rear Panel Connections (MS464xA VNA)
Part Number Index Description From VNA Location
To 3739C Test Set
Location
MS464xA VNA 1
3739C Test Set 2
73598-1 a
(5 cable bundle)
a. Tighten each cable in this group using an 8 mm (5/16 in) torque end wrench set to 0.9 N·m (8 lbf·in).
3 IF Interface Cables
a1 IF
b1 IF
a2 IF
b2 IF
a1 IF
b1 IF
a2 IF
b2 IF
4 External I/O Cable External I/O External I/O
3-806-225 5 BNC (M-M) Cable VNA Ext Analog Out Test Set Ext Analog In
3-806-225 6 BNC (M-M) Cable VNA Ext ALC Test Set Ext ALC Out
GPIB Cable
(Not supplied) 7Cable for program- matic control
IEEE 488.2 GPIB (For remote
controlling ME7838) NA
GPIB Cable
(Not supplied) 8Cable for program- matic control
Dedicated GPIB (For con-
trolling peripherals such as
Power Meter)
NA
Ethernet Cable
(Not supplied) 9
Cable for program-
matic control Ethernet Port NA
USB Type B Cable
(Not supplied)
Cable for program-
matic control USB Port (2) NA
– 10 AC Power Cord AC Power Input NA
– 11 AC Power Cord NA AC Power Input
– 12 Module Interface Cable Length Switch (Included with 3739C-003 Option)

2. Installing Rear Panel Cables (MS464xB VNA)
VectorStar ME7838D/G QSG PN: 10410-00732 Rev. C QSG-5
2. Installing Rear Panel Cables (MS464xB VNA)
This section focuses on installing cables when using a MS464xB VNA. Start the ME7838D/G assembly by
placing the 3739C Broadband Test Set so you can access the rear panel for cable connection.
At the rear panels connect the cables as shown in Figure 2 and Table 2.
Warning To avoid injury, use two or more people to lift the MS464xB VNA to the top of the 3739C Test Set.
Caution
To avoid connector damage or inaccurate measurements, before making any connections, review
the 10100-00060-Connector Care Instruction Sheet, that was shipped with this system. Observe
connector torque requirements where indicated in this guide.
Figure 2. Install Rear Panel Cables between 3739C Test Set and MS464xB VNA
WARNING
No operator service-
able parts inside.
Refer servicing to
qualified personnel.
Ext
Alc
Out
Ext
Analog
In
a1ba2b2
IF Outputs
External I/O
~ LINE INPUT
47-63 Hz
85-240 VAC
150 VA Max
Fuse 250V 2A T
CAUTION
Do not operate with
power cord ungrounded.
CAUTION
For continued fire protection
replace only with specified
type and rated fuse.
Cable Length
Standard Extended
Module Interface
Ext In ALC 2
(With Option 031)
6
Ext In ALC 1
(No Option 031)
6
Module Interface
Cable Length Switch
MS464xB VNA
1
2
34
7
10
11
12
8
9
b1 IF a2 IF a1 IF b2 IF
Ext Analog Out
External I/O
Ext Analog In
Ext ALC Out
External I/O
333
5
6
4
5
3739C Test Set
3739C-003 Option Only

2. Installing Rear Panel Cables (MS464xB VNA)
QSG-6 PN: 10410-00732 Rev. C VectorStar ME7838D/G QSG
Table 2. ME78383D/G Cable Rear Panel Connections (MS464xB VNA)
Part Number Index Description From VNA Location
To 3739C Test Set
Location
MS464xB VNA 1
3739C Test Set 2
73598-1 a
(5 cable bundle)
a. Tighten each cable in this group using an 8 mm (5/16 in) torque end wrench set to 0.9 N·m (8 lbf·in).
3 IF Interface Cables
a1 IF
b1 IF
a2 IF
b2 IF
a1 IF
b1 IF
a2 IF
b2 IF
4 External I/O Cableb
b. Tighten the connector screws with a flat blade screwdriver.
External I/O External I/O
3-806-225 5 BNC (M-M) Cable Ext Analog Out Test Set Ext Analog In
3-806-225 6 BNC (M-M) Cable Ext In ALC 1 (without Option 031)
Ext In ALC 2 (with Option 031) Test Set Ext ALC Out
GPIB Cable
(Not supplied) 7Cable for program- matic control
IEEE 488.2 GPIB (for remote
controlling ME7838) NA
GPIB Cable
(Not supplied) 8Cable for program- matic control
Dedicated GPIB (For controlling
peripherals such as Power
Meter)
NA
Ethernet Cable
(Not supplied) 9
Cable for program-
matic control Ethernet Port NA
USB Type B Cable
(Not supplied)
Cable for program-
matic control USB Port (2) NA
– 10 AC Power Cordc
c. Do not yet connect to AC power cords to the AC source.
AC Power Input NA
– 11 AC Power CordcNA AC Power Input
– 12 Module Interface Cable Length Switch (Included with 3739C-003 Option)

3. Installing Front Panel Cables
VectorStar ME7838D/G QSG PN: 10410-00732 Rev. C QSG-7
3. Installing Front Panel Cables
Connect the front panel cables between the MS464xA/B VNA and the 3739C Test Set, and between the Test
Set and the millimeter-Wave modules as shown in Figure 3 and as described in Table 3.
Example MS464xA/B VNA equipped with Option 051, 061, or 062 with included Front Panel Loops
Note: The cables for Test Port 1 to Module SRC (key 8 to 9) and Test Port 2 to Module SRC (key 12 to13) are not
used with mm-Wave modules 3744A-EE, 3744A-EW, or 3744A-Rx.
Figure 3. Front Panel Cables between 3739C Test Set, MS464xA/B VNA, and Modules
+27 dBm MAX AVOID STATIC DISCHARGE
ALL PORTS: CAUTION
Standby Operate
Frequency
Power
Sweep
Avg
Response
Display
Scale
Marker
Channel
Trace
Measurement
Calibration
Application
File
System
Help
Preset
RF, LO, Test, Ref,
and Pwr/Signal to
Port 1
Module
Test Port 1
to Module SRC
(MA25300A, MA25400A, or 3743A)
Test Port 2
to Module SRC
(MA25300A, MA25400A, or 3743A)
RF, LO, Test, Ref,
and Pwr/Signal to
Port 2
Module
1
2
34
11
6
5
9
10
12
7
8
13

3. Installing Front Panel Cables
QSG-8 PN: 10410-00732 Rev. C VectorStar ME7838D/G QSG
Table 3. ME78383D/G Cable Interconnect Part Numbers and Locations
Part Number Index Description
Connection
From
Connection
To
MS464xA/B 1 VectorStar VNA – –
3739C 2 3739C Broadband Test Set – –
67357-xx
(See Note 1)
3 Semi-Rigid (KM-KM) Cable
• Tighten using an 8 mm (5/16 in) torque end
wrench set to 0.9 N·m (8 lbf·in).
VNA RF Test Set RF
67357-xx
(See Note 1)
4 Semi-Rigid (KM-KM) Cable
• Tighten using an 8 mm (5/16 in) torque end
wrench set to 0.9 N·m (8 lbf·in).
VNA LO1 Test Set LO1
67357-xx
(See Note 1)
5 Semi-Rigid (KM-KM) Cable
• Tighten using an 8 mm (5/16 in) torque end
wrench set to 0.9 N·m (8 lbf·in).
VNA LO2 Test Set LO2
75685-1
6-7,
10-11
mm-Wave Module Interface Cables
(for MA25300A, MA25400A, 3743A,
3744A-EE, 3744A-EW modules)
Group of 5 cables for each port
Test Set
(Port 1, Port 2)
RF, LO, Test, Ref,
Power/Signal
Module
(Port 1, Port 2)
RF, LO, Test, Ref,
Power/Signal
75685-2
OML Module Interface Cables
Group of 4 cables for each port
Test Set
(Port 1, Port 2)
RF, LO, Test, Ref
Module
(Port 1, Port 2)
RF, LO, Test IF,
Ref IF
VDI Module Interface Cables
Group of 4 cables for each port
Test Set
(Port 1, Port 2)
RF, LO, Test, Ref
Module
(Port 1, Port 2)
RF Input, LO
Input, Meas. IF,
Ref IF
75685-3
mm-Wave Module Interface Cables
(for 3744A-Rx modules)
Group of 3 cables
Test Set
(Port 1, Port 2)
LO, Test,
Power/Signal
Module
(Port 1, Port 2)
LO, Test,
Power/Signal
806-xxx-R a
(See Note 2)
8-9,
12-13
Coaxial Cable
(MA25300A, MA25400A, or 3743A modules)
VNA
(Port 1, Port 2)
mmWave module
(Port 1, Port 2)
Cable Selection Notes
Note 1
Cable Selection Description
67357-13 Standard
(Non-Rack Mount) –
67357-67 3739C-001 Rack
Mount Option –
Note 2
Cable Selection Description
806-206-R 24 in, 1.85 mm
M-F coaxial cable –
806-209-R 36 in, 1.85 mm
M-F coaxial cable –
806-396-R
36 in, 1.85 mm
M-F phase stable
coaxial cable
–

3. Installing Front Panel Cables
VectorStar ME7838D/G QSG PN: 10410-00732 Rev. C QSG-9
a. The 806-xxx-R Coaxial Cables are not included or required when using the 3744A-EE, 3744A-EW mm-Wave modules, or the
3744A-Rx Receiver Module.

4. Millimeter-Wave Module Connections
QSG-10 PN: 10410-00732 Rev. C VectorStar ME7838D/G QSG
4. Millimeter-Wave Module Connections
Connect the 3739C Broadband Test Set Port-1 and Port-2 cables to the MA25300A, MA25400A, 3743A,
3744A-EE, 3744A-EW, or 3744A-Rx Modules as shown in Figure 4 and Figure 5, observing the correct torque
limits for each connector, as specified in Table 4. Route the cable assemblies through the cable restraint.
Note
For ease of connection, the module can be removed from the bracket, then reinstalled after cables
are secured. Observe torque instructions where indicated.
Each module (except the 3744A-Rx) is characterized for absolute power for a specific VNA Serial
Number and VNA Test Port as designated on the module port assignment label. Ensure the module
matches the correct VNA and Test Set port.
If an alternative MA25300A or 3743 series mm-Wave module is used there will be approximately
1 dB of absolute power inaccuracy, which can be corrected by performing a power calibration.
An alternative MA25400A mm-wave module can lead to a 3 dB absolute power accuracy at higher
frequencies which can also be corrected by performing a power calibration.
For more detailed information on the modules including DUT Waveguide (WG) connection alignment
and custom bracket mounting, refer to 10410-00311-VectorStar® Broadband/Banded
Millimeter-Wave Modules Reference Manual.
Figure 4. Millimeter-Wave Module Connections—374x Modules
TEST
LO
Power/Signal
RF
REF
SRC (Not used)
6
5
3744A-EE
3744A-EW
4
9
3
2
3743A
TEST REF
SRC
RF
Power/Signal
1
3
LO 6
5
9
7
8
3743A
4
2
TEST REF
SRC
LO
Power/Signal
RF
(Not used)
(Not used)
(Not used)
5
3744A-Rx
3
6
2

4. Millimeter-Wave Module Connections
VectorStar ME7838D/G QSG PN: 10410-00732 Rev. C QSG-11
Figure 5. Millimeter-Wave Module Connections—MA25300A and MA25400A modules
Table 4. Millimeter-Wave Module Connections
Cable P/N Index Description
N/A 1 Millimeter-Wave Module in bracket
DUT
Connector 2
0.8 mm Connector (MA25300A module)
• Tighten using a torque end wrench and a plain end wrench
• 6 mm Torque End Wrench set to 0.45 N·m (4 lbf·in). Recommended is Anritsu 01-524.
• 6 mm / 7 mm Open End Wrench. Recommended is Anritsu 01-525.
0.6 mm Flange Connector (MA25400A module)
• Tighten using a hex torque wrench set to 6 cN·m (0.5 lbf-in). Recommended is Anritsu
01-530-R.
W1 – 1 mm Connector (3743A, 3744A-Rx modules)
• Tighten using a torque end wrench and a plain end wrench
• 6 mm Torque End Wrench set to 0.45 N·m (4 lbf·in). Recommended is Anritsu 01-504.
• 6 mm / 7 mm Open End Wrench. Recommended is Anritsu 01-505.
WR-10 or WR-12 to 1 mm connector (3744A-EE, 3744A-EW modules)
• Use Waveguide Adapter Toolkits (74394-2, 74394-3, or 74394-4).
• Tighten using a torque end wrench and a plain end wrench.
• 6 mm Torque End Wrench set to 0.45 N·m (4 lbf·in). Recommended is Anritsu 01-504.
• 6 mm / 7 mm Open End Wrench. Recommended is Anritsu 01-505.
MA25400A
REF
4
RF
9
SRC
8
LO
6
TEST
3
Power/Signal
5
DUT Connector
2
MA25300A
REF
4
2RF
9
SRC
8
LO
6
TEST
3
Power/Signal
5
S/N
11
Port Assignment
10
DUT Connector
2S/N
11
Port Assignment
10
PORT 1

4. Millimeter-Wave Module Connections
QSG-12 PN: 10410-00732 Rev. C VectorStar ME7838D/G QSG
Inverting a Module
If necessary, a module can be turned over in the bracket to change the height of the DUT connector. To turn
the module over:
1. Remove the six Knurled Head Thumbscrews M2 × 8 mm (four M3 x 8 mm on the MA25300A or
MA25400A; note that screws with smaller thumbwheels are needed with the MA25400A).
2. Turn the module over.
3. Install the cable assembly then install the module into the bracket.
4. Install the thumbscrews.
75685-1a
or
75685-3b,c
3
TEST – SSMC Connector (Connected on all Modules)
• Tighten using a 4 mm (5/32 in) torque end wrench set to less than 0.17 N·m (1.5 lbf·in).
• Recommended is Anritsu 01-529-R torque wrench.
4
REF – SSMC Connector (Connected on all Modules except 3744A-Rx)
• Tighten using a 4 mm (5/32 in) torque end wrench set to less than 0.17 N·m (1.5 lbf·in).
• Recommended is Anritsu 01-529-R torque wrench.
5Power/Signal Latching Bi-Lobe™ Connector (Connected on all modules)
6
LO – K Connector (Connected on all Modules)
• Tighten using an 8 mm (5/16 in) torque end wrench set to 0.9 N·m (8 lbf·in).
• Recommended is Anritsu 01-201.
7 Module Power and I/O Cable Restraint
806-206-Rd
or
806-209-Rd
or
806-396-Rd
8
SRC – V Connector (Connected on MA25300A, MA25400A, and 3743A only)
• Tighten using an 8 mm (5/16 in) torque end wrench set to 0.9 N·m (8 lbf·in).
• Recommended is Anritsu 01-201.
75685-1a 9
RF – V Connector (Connected on all Modules except 3744A-Rx)
• Tighten using an 8 mm (5/16 in) torque end wrench set to 0.9 N·m (8 lbf·in).
• Recommended is Anritsu 01-201.
N/A 10 Factory Calibrated Port Assignment Label
N/A 11 Module Serial Number Label
a. Cable assembly 75685-1 is used on MA25300A, MA25400A, 3743A, 3744A-EE, and 3744A-EW modules.
b. The REF cable is not used in the 75685-3 cable assembly.
c. Cable assembly 75685-3 is used on the 3744A-Rx module.
d. The 806-xxx-R Coaxial Cable is used only with the MA25300A, MA25400A, and 3743A modules.
Table 4. Millimeter-Wave Module Connections
Cable P/N Index Description

4. Millimeter-Wave Module Connections
VectorStar ME7838D/G QSG PN: 10410-00732 Rev. C QSG-13
Millimeter-Wave Module Operating Environment
The modules require use of heatsink with adequate air circulation. The following notes should be considered
before operating the MA25300A, MA25400A, 3743x, 3744x-xx, and 3744x-Rx Millimeter-Wave Modules:
•Thermal heat sinking similar to the supplied mounting brackets of the Millimeter-Wave Module should
be considered in custom mounting applications.
•Each MA25300A Module consumes a maximum of 12 watts.
•Each MA25400A Module consumes a maximum of 12 watts.
•Each 3743x Module consumes a maximum of 12 watts.
•Each 3744x-EE and 3744x-EW Module consumes a maximum of 12 watts.
•Each 3744x-Rx Module consumes a maximum of 7 watts.
•The primary heat sinking path for the module is on the two external side surfaces used to mount to the
support brackets.
•With the attached cable mounting brackets, the case temperature rise is approximately 15 °C to 20 °C
above ambient.
MA25400A Module Installation
Primary use of the MA25400A module is for on-wafer measurements. For typical on-wafer measurements the
MA25400A module will be mounted with a dedicated mmWave module bracket on a probe station. Appropriate
probes (such as the MPI T220 probe) are connected to the module for on-wafer calibrations and measurements.
Refer to the probe manufacturer's operation guide for recommended installation and calibration procedures.
For coaxial measurements a series of adapters are available, such as the 33WG50 W1 (1mm) male to
MA25400A interface adapter for measuring 1mm devices (or attachment of 1mm on-wafer probes). 0.8 mm and
waveguide adapters are also available. Coaxial/waveguide calibration of the MA25400A module is therefore
attainable using the appropriate calibration kit(s) in relevant sub-bands.
The flange interface is based on a standard UG-387 waveguide flange and one connects to it by first lining up
the alignment pins and then mating the flanges.
Standard captive waveguide screws are used with an exposed shank. This is useful since both mating flanges
may have threaded holes. Thread the screws all the way into the mating flange (so the shank clears) before
mating to the module. This simplifies assembly and avoids cross-threading.
Use a 6 N-cm torque wrench for these screws (one is in the accessory kit). Tighten in a star pattern (or slowly
tighten opposite sides sequentially when using two screws).
Figure 6. Waveguide Screw Threaded Through the Flange

4. Millimeter-Wave Module Connections
QSG-14 PN: 10410-00732 Rev. C VectorStar ME7838D/G QSG
Certain mating devices (like the 33GG50 thru and on-wafer probes) have center pins that can move laterally if
bumped. Be sure the pins are roughly centered (using the magnifying loupe in the accessory kit or a
microscope) before mating.
1. Correctly Centered Pin 2. Incorrectly Centered Pin
Figure 7. Checking Center Pin for Correct Centering

5. OML/VDI Module Connections
VectorStar ME7838D/G QSG PN: 10410-00732 Rev. C QSG-15
5. OML/VDI Module Connections
Connect the front panel cables between the 3739C Test Set, and the OML or VDI modules as shown in
Figure 6, Figure 7, and Figure 8, and as described in Table 5, Table 6, and Table 7.
Caution To avoid connector damage, observe torque requirements where indicated.
Figure 8. Cable Connections between VNA, 3739C Test Set, and OML or VDI Frequency Extension Modules
+27 dBm MAX AVOID STATIC DISCHARGE
ALL PORTS: CAUTION
Standby Operate
Frequency
Power
Sweep
Avg
Response
Display
Scale
Marker
Channel
Trace
Measurement
Calibration
Application
File
System
Help
Preset
Port 1 RF, LO, Test, Ref
To Left OML/VDI
Module
Port 2 RF, LO, Test, Ref
To Right OML/VDI
Module
1
2
34
6
7 9
5
8

5. OML/VDI Module Connections
QSG-16 PN: 10410-00732 Rev. C VectorStar ME7838D/G QSG
Table 5 ME78383D/G Cable Interconnect Part Numbers and Locations
Part Number Index Description
Connection
From
Connection
To
MS464xA/B 1 VectorStar VNA
3739C 2 3739C Broadband Test Set
67357-xx
(See Note 1)
3 Semi-Rigid (KM-KM) Cable
• Tighten using an 8 mm (5/16 in) torque end
wrench set to 0.9 N·m (8 lbf·in).
• Recommended is Anritsu 01-201.
VNA RF Test Set RF
67357-xx
(See Note 1)
4 Semi-Rigid (KM-KM) Cable
• Tighten using an 8 mm (5/16 in) torque end
wrench set to 0.9 N·m (8 lbf·in).
• Recommended is Anritsu 01-201.
VNA LO1 Test Set LO1
67357-xx
(See Note 1)
5 Semi-Rigid (KM-KM) Cable
• Tighten using an 8 mm (5/16 in) torque end
wrench set to 0.9 N·m (8 lbf·in).
• Recommended is Anritsu 01-201.
VNA LO2 Test Set LO2
75685-2
6-7,
8-9
OML Module Interface Cables
Group of 4 cables for each port
Test S e t
(Port 1, Port 2)
Ref
RF
LO
Test
OML Module
(Port 1, Port 2)
Ref IF
RF Input
LO Input
Test I F
75685-2 VDI Module Interface Cables
Group of 4 cables for each port
Test S e t
(Port 1, Port 2)
RF
Ref
Test
LO
VDI Module
(Port 1, Port 2)
RF Input
Ref. IF
Meas. IF
LO Input
Cable Selection Notes
Note 1
Cable Selection Description
67357-13 Standard (Non-Rack Mount)
67357-67 3739C-001 Rack Mount Option

5. OML/VDI Module Connections
VectorStar ME7838D/G QSG PN: 10410-00732 Rev. C QSG-17
Figure 9. VNA/Test Set Cable Connections to OML Modules
Table 6. OML Module Connections
Cable P/N Index Description
N/A 1 OML Module
75685-2
2
Ref IF – SMA Connector
• Tighten using an 8 mm (5/16 in) torque end wrench set to 0.9 N·m (8 lbf·in).
• Recommended is Anritsu 01-201.
3
RF Input – SMA Connector
• Tighten using an 8 mm (5/16 in) torque end wrench set to 0.9 N·m (8 lbf·in).
• Recommended is Anritsu 01-201.
4
LO Input – SMA Connector
• Tighten using an 8 mm (5/16 in) torque end wrench set to 0.9 N·m (8 lbf·in).
• Recommended is Anritsu 01-201.
5
Test IF – SMA Connector
• Tighten using an 8 mm (5/16 in) torque end wrench set to 0.9 N·m (8 lbf·in).
• Recommended is Anritsu 01-201.
N/A 6 OML Module Power Supply
Ref IF RF Input DC Power LO Input Test IF Ref IF RF Input DC Power LO Input Test IF
From ME7838 - 3739C
Test Set Port 1
LO
OML Power Supply
TestRef RF
From ME7838 - 3739C
Test Set Port 2
LO TestRef RF
OML
Frequency Extension
Modules
(Typical)
1
234
6
5
OML Power Supply

5. OML/VDI Module Connections
QSG-18 PN: 10410-00732 Rev. C VectorStar ME7838D/G QSG
Figure 10. VNA/Test Set Cable Connections to VDI Modules
Table 7. VDI Module Connections
Cable P/N Index Description
N/A 1 VDI Module
75685-2
2
RF Input – K (2.92 mm) Connector
• Tighten using an 8 mm (5/16 in) torque end wrench set to 0.9 N·m (8 lbf·in).
• Recommended is Anritsu 01-201.
3
Ref. IF – SMA Connector
• Tighten using an 8 mm (5/16 in) torque end wrench set to 0.9 N·m (8 lbf·in).
• Recommended is Anritsu 01-201.
4
Meas. IF – SMA Connector
• Tighten using an 8 mm (5/16 in) torque end wrench set to 0.9 N·m (8 lbf·in).
• Recommended is Anritsu 01-201.
5
LO Input – K (2.92 mm) Connector
• Tighten using an 8 mm (5/16 in) torque end wrench set to 0.9 N·m (8 lbf·in).
• Recommended is Anritsu 01-201.
N/A 6a
a. The VDI module connectors may differ slightly than on the illustration shown above. For example, depending on the model and
date built, the power supply connector may be round instead of rectangular.
VDI Module Power Supply
Ref. IFRF Input LO InputPower Meas. IF Ref. IFRF Input LO InputPower Meas. IF
From ME7838 - 3739C
Test Set Port 1
LO
VDI Power Supply
Test
RefRF
From ME7838 - 3739C
Test Set Port 2
VDI
VNA Extender
Modules
(Typical)
LO
VDI Power Supply
Test
RefRF
1
234
6
5

6. Accessory Kits
VectorStar ME7838D/G QSG PN: 10410-00732 Rev. C QSG-19
6. Accessory Kits
All ME7838x systems include a basic accessory kit that has torque wrenches for the IF, 1.85/2.92 and 0.8/1mm
connectors among other supplies. The ME7838G system includes an additional accessory kit that contains:
•Two 33WG50 adapters (to allow module use with 1 mm probes and accessories)
•One 33WFWF50 adapter (to facilitate additional 1 mm connections)
•One 33GG50 thru adapter (direct connection of modules with each other)
•Extra flange screws
•Flange screw hex torque wrench
•Eye Loupe, 10X Magnifier
Of particular note is the 33GG50 Thru adapter which has male flange pins on both ends. To support the
extreme bandwidth of the device, the thru does not have support beads so, if the pins are knocked accidentally,
concentricity can be off. The pins can be re-centered with any small tool and only need to be re-centered within
~ 1/3 of a radius of the outer conductor (the sloped edge of the pin will guide it into the collet). A magnifying
loupe is included in the kit to aid in this process.

Anritsu utilizes recycled paper and environmentally conscious inks and toner.
Anritsu Company
490 Jarvis Drive
Morgan Hill, CA 95037-2809
USA
http://www.anritsu.com