VDI USER GUIDE Product: 340-360GHz Transmitter System Serial Number(s): VDI-Tx-Sl06b Components: VDI-D90-S017b, VDI-D1S0-SI-02, VDI-D350-S1-02b, VDI WR2.2 Diagonal Horn, VDI FeedbacklBias System and Power box; Spacek A425-4XWB-25 sn 5F27; Micro Lambda MLSN-I012 sn 2091; ATM C126H-20 sn G3S0107-01; Pacific Millimeter Q3 sn OS7 Virginia Diodes Inc., (434) 297-3257 120S07 -06com p120-Teravision-320GHzupgrade-l 1I25/0S Original Shipment: 111506-06compI20-Tera-340GhzTxRx-l 4/27/07

Section 1 User Guide Overview The customer must read the entire User Guide prior to handling, testing, biasing, or using this product. This document gives a general description of the product, several important warnings to be considered when using the product, and basic operating instructions. This VDI product includes an upgraded 340-360GHz transmitter system.

Warning- Read the entire VDI User guide for this product prior to operation.

Warning - This product can be permanently damaged by ElectroStatic Discharge (ESD). It is recommended that engineers and technicians wear a special grounded wrist strap when handling this component. In addition, the work environment around the component should be well grounded.

Warning - Opening the blocks, parts, or components will damage the internal components. VD I is not responsible for the warranty or guaranty of products damaged as a result of improper handling, testing, biasing, or use by customer.

Caution- VDI assumes the customer is familiar with microwave, millimeter wave, and VDI products. The user and customer are expected to understand all safety guidelines, health hazards, and general advisories that may exist and are associated with the use of this device. VDI is not responsible for any human hazards that may exist or may occur while using this device.

Power Box On/Off

Parallel port

Frequency monitor

~RFoutput

input

Figure 1 Photograph of the product is shown.

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VDI Power Box

TTL AC Power Modulation Input.. ...

+IRef from VDI Rx F eedbackIB ias

~ System

I I IMicro Lambda Synthesizer

Spacek .. Spacek ... Power

f­ x4 Amp

VDI VDI D90 DI80 VDI V~ x2 x2 D350

x2

PMP User RF Input Q3 x3 (14.17-15GHz)

RF Output (340-360GHz)

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Figure 2 Diagram of the product is shown.

Section 2 General Operating Procedures and Guidelines VDI assumes the customer is familiar with VDI products, and VDI is not responsible for the warranty or guaranty of products damaged as a result of improper handling, testing, biasing, or use by customer. VDI offers the following general guidelines for using these products and recommends the customer contact VDI at (434) 297-3257 for assistance if needed. The following procedures are a quick guide for turning on and off the product. In each case the individual steps must be followed in the proper sequence to avoid damaging critical components.

Warnine,-RF drive limitations, voltage bias limitations, and current limitations may exist for this device and are described below. Exceeding these limitations and guidelines may cause permanent damage to the device.

The drive and bias guidelines, limitations, and recommendations for this product are: • The connections do not require bias; do not attempt to bias the devices or the

system will be destroyed. • Do not exceed 5VDC on the TTL modulation input. • Carefully review all instructions and guidelines for the MLSN-l 012 synthesizer

provided by Micro Lambda. • Carefully review all instructions and guidelines for the original VDI-Tx-Sl06

system. • The user-supplied RF input power must be 17-18dBm for optimum saturated

operation; do not exceed 20dBm or the system may be damaged. • Do not change the RF input sources while the system power is on. • Do not tamper with the SMA or other connections.

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Contact VDr with questions or concerns regarding the product RF drive limitations, voltage bias limitations, and current limitations.

The Following procedure is to be used when turning- on the device. Step A: The User and Test Bench must be properly grounded and protected against ESD.

Step B: Connect the VDI Power Box to the system with the cable provided.

Step C: Choose user-supplied RF input or built-in synthesizer RF input and connect the appropriate multiplier to the Spacek Power Amplifier. Connect the unused multiplier to the SMA stand-off.

Step D: Turn on the Power Box.

Step E: Connect the MLSN-1012 to the parallel port ofa Windows computer and launch the MLSX Synthesizer Interface program provided. Click the "Update Infonnation" box. If the program does not update with the infonnation for the MLSN-1012, contact VDI at (434) 297-3257.

Step F: Adjust the RF frequency using the MLSX program when using the built-in synthesizer source (1 O.625-11.25GHz). When using the user-supplied RF source (14.17­15GHz), slowly increase the power level to 17-18dBm for optimum saturated operation; do not exceed 20dBm or the system may be damaged.

Step G: If desired, connect a 0-5VDC square wave to the TTL modulation input to chop the output signal.

The Following procedure is to be used when turning- off the device. Step A: The User and Test Bench must be properly grounded and protected against ESD.

Step B: Turn off the VDI Power Box.

Step C: If necessary, turn off the user-supplied RF input.

Step C: Exit the MLSX program.

Step D: After completing turn-off procedures described above, it is now safe to turn off any other equipment on the Test Bench.

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Section 3 Product Performance and Guidelines The product perfonnance is shown below.

15.000

14.000

13.000

12.000­

i'11.000­

110.000

~ 9.000

6 8.000­

7.000­

6.000

5.000

4.000 I I I I I I I I I I I I

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340.0 342.0 344.0 346.0 348.0 350.0 352.0 354.0 356.0 358.0 360.0 362.0 Frequency (GHz)

0350 BI-02B 6V, 0180 BI-02 12V, 090 Bl7B 20um 17V, II'1.SN-I012 + x4, spot test after ~I

Figure 3 The product perfonnance (output power vs . output frequency) is shown.

Section 4 End of Document VDr is not responsible for the warranty or guaranty of products damaged as a result of improper handling, testing, biasing, or use by customer.