Tektronix TG8000 Service Manual

SDI7 module adjustment procedures
Table 14-1: Equipment required for the SDI7 module adjustment procedures (cont.)
Item No. Minimum requirement Recommended equipment
75 Ω precision terminator
1
75 Ω ±0.1%
Tektronix part number 011-0102-03
BNC T connector
1 Tektronix part number 103-0030-00
BNC female to dual banana
adapter
1 Tektronix part number 103-0090-00
Adjustment procedures
There is only one adjustment for the SDI7 module. Perform this adjustment if the
module fails the SDI Output Amplitude portion of the performance verification
procedure. This procedure replicates part of that procedure.
Before adjusting the SDI Output Amplitude, you must first characterize the test
system amplitude.
To characterize the test
system amplitude
There are two parts to the amplitude characterization:
Part
A: Sets up a characterization reference to the DMM.
Part B: Characterizes the te st system.
Part A: Characterize the Reference against the DMM.
1. Connect the equipment as follows:
a. One end of a 1 m high bandwidth cable to the AFG3101 output.
b. The other end o f the 1 m cable to the BNC T.
c. The BNC T to a BNC to banana adapter.
d. The other end of the BNC T to a precision terminator.
e. The end of the banana adapter to the input of the DMM.
2. Set the AFG3101 to output a sine wave into a load impedance of 75 Ω.
3. Set the AFG3101 to a 10 kHz output into a load impedance of 75 Ω.
4. Set the AFG3101 to a 800 mVp-p output into a load impedance of 75 Ω.
5. Check that the output of the AFG3101 is On.
6. Set the DMM to me asure AC voltage using a medium filter setting. Set the
range to allow for four digits of RMS amplitude.
7. Record the DMM measurement in the SDI output amplitude table. (See
Table 14-2 on page 14-6.)
TG8000 Multiformat Test Signal Generator Service Manual 14–3

Tektronix TG8000 Specifications

General

Brand	Tektronix
Model	TG8000
Category	Portable Generator
Language	English