Varian UNITY INOVA NMR, Hardware Installation, Page: 18 / 65

01-999044-00 C0501 UNITY INOVA Solids Hardware Installation
17
Chapter 2.
Wideband NMR Module
Install the Wideband NMR Module (01-903007-00) according to the following procedure.
The Wideband NMR Module is a board that includes two 5-MHz 12-bit ADCs and 2 MB
of onboard memory.
CAUTION:
The following installation involves handling static sensitive
equipment—PROMs and printed circuit boards. Take all precautions
necessary to suppress electrostatic spikes and discharges near the
devices: stand on antistatic pads, wear natural fiber materials, and use
a grounded antistatic wristband before touching any equipment, and
do not place other boards or paper on top of boards and so on. Failure
to suppress electrostatic discharges can result in permanent damage
to components.
2.1 Installing the Wideband NMR Module
1. Make sure the power is off in both the digital and rf card cages.
2. Install the Wideband NMR Module in the digital card cage in the slot to the right of
the 500-kHz ADC board.
Use the usual antistatic precautions and be careful that the small surface-mount
components on the solder side of the board do not catch on 500-kHz ADC board
front panel.
3. Route the two BNC cables (00-958298-10 provided in the kit) through the cable path
on the left of the rf card cage and through the right of the digital card cage. Connect
the cables as follows:
•
Connect one cable from J1 on the Wideband NMR Module to WB CH A (J246)
on the Observe Receiver module.
•
Connect the other cable from J2 on the Solids ADC to WB CH B (J247) on the
Observe Receiver module.
4. Make the following connections:
a. Remove the CTC cable from the DAC board and connect the SMB Tee (58-
180018-00) in its place on the DAC board.
b. Connect the CTC cable to one side of the SMB Tee.
c. Connect cable (00-992897-04) between the other side of the SMB Tee and J5
on Solids ADC board.
5. Turn the power back on to the digital and rf card cages.
6. For VNMR 5.2F only, install the software patch as follows:
a. Log in a
vnmr1
and insert the software patch CD-ROM.
b. Open File Manager and click on the File Manager window for the CD-ROM.