Tektronix SD-44, Instruction Manual, Page: 21 / 30

Performance Verification
SD-44 Instruction Manual
13
Table 2: Test equipment (cont.)
Description Example product Minimum requirements
Sampling oscilloscope with
sampling head 11K (1180X, CSA80xX with
SD-32 sampling head)
PC with GPIB port and
printer printer output of sampled wave-
forms
Adjustable single-mode
optical attenuator 4 decades, 9
m
m core fiber, FC-
style connectors
Tektronix OA5002
Digital voltmeter 4 1/2 digit Keithley 2000 or
Tektronix DMM916
50
W
termination
±
1% 011-0049-01
BNC-to-banana adapter BNC female to dual banana 103-0090-00
Optical cable FC-FC multimode, 9
m
m, 2 meters 174-1910-00
Inline optical adapter FC female to FC female 131-5039-00
1
CW and modulated mode available: modulation with OFF level at or below 0.1
m
W,
optical falltime < 1
m
s
The O/E converter under test and the test equipment and should be warmed up
for 20 minutes at an ambient temperature between 20 and 30
_
C.
Output Zero
1. Attach the output of the SD-44 to the voltmeter inputs with a 50
W
termina-
tion and BNC-to-banana adapter.
2. Install the optical dust cover on the input of the SD-44.
3. Check that output voltage is
≤ ±
1 mV. Record the result on the test record.
DC Conversion Gain
NOTE
. Make sure that the optical connector ends of both the fiber from the
optical attenuator output and the SD-44 under test input fiber are well cleaned
before performing this step. See to the cleaning instructions on page 7.
1. Connect the 1310 nm laser source to attenuator input.