HP 37717C, Calibration Manual, Page: 228 / 399

3-119
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.
Press to display RECALL.
Press , select 0 — A and press to recall the default settings
(wavelength = 1300 nm, measurement time = 200 ms, autorange).
4. Press then to select the Power Level measurement on the HP
8153A.
5. Press on the HP 37717C and select SIGNAL [STM-1 OPT]
[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 on the HP 37717C and select SIGNAL [STM-4 OPT]
[1310 nm].
9. Repeat steps 6 and 7.
10. Press on the HP 37717C and select SIGNAL [STM-0 OPT]
[1310 nm].
11. Repeat steps 6 and 7.
12. Press select STORED SETTINGS NUMBER [0] (Default Settings) and
press .
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 on the HP 37717C and select SIGNAL [STM-1 OPT]
[1310 nm].
16. Adjust the Optical Attenuator to obtain a reading of -34dBm
±
1dB on the Power
Meter.
MODE
SYSTEM
EDIT EXEC
MODE dBmw
TRANSMIT
SDH
TRANSMIT
SDH
TRANSMIT
SDH
OTHER
RECALL
TRANSMIT
SDH