HP 37717C Calibration Manual page 228

Performance Tests
STM-1/STM-4 Optical Interface (Options 130, 131)
2. Switch on the HP 37717C, check that immediately on power up the LASER ON
led on the front panel illuminates for a few seconds and Recall the HP 37717C
DEFAULT SETTINGS as shown on 3-2.
3. Recall default settings on the HP 8153A:
Press to select MENU mode on the HP 8153A.
MODE
Press to display RECALL.
SYSTEM
Press , select 0 —
EDIT
(wavelength = 1300 nm, measurement time = 200 ms, autorange).
4. Press then
MODE
8153A.
5. Press
TRANSMIT
[1310 nm].
6. Verify that the front panel LASER ON led is on, indicating the laser is enabled.
7. Check the HP 8153A Power Meter reading is between -15 dBm and -8 dBm
(Typically -10 dBm).
8. Press
TRANSMIT
[1310 nm].
9. Repeat steps 6 and 7.
10. Press
TRANSMIT
[1310 nm].
11. Repeat steps 6 and 7.
12. Press select STORED SETTINGS NUMBER [0] (Default Settings) and
OTHER
press .
RECALL
13. Verify that the front panel LASER ON led is off before continuing.
14. Connect the Optical Attenuator between the Power Meter and the HP 37717C
1310 nm Optical Out port (ensure that all connections are tight and that the cable has
no twists). Set the Optical Attenuator to ATTEN 0dB, WAVELENGTH 1310 nm ;
CAL=0.
15. Press
TRANSMIT
[1310 nm].
16. Adjust the Optical Attenuator to obtain a reading of -34dBm 1dB on the Power
Meter.
A and press
EXEC
to select the Power Level measurement on the HP
dBmw
on the HP 37717C and select SIGNAL [STM-1 OPT]
SDH
on the HP 37717C and select SIGNAL [STM-4 OPT]
SDH
on the HP 37717C and select SIGNAL [STM-0 OPT]
SDH
on the HP 37717C and select SIGNAL [STM-1 OPT]
SDH
to recall the default settings
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