Procedure - HP 37717C Calibration Manual

WA R N I N G
Performance Tests
Jitter Receiver STM-1 Optical Interface (Options A1N, [A1R], A3V
[A3W])
Safety precautions must be observed when handling the HP 37717C Optical
Modules as these generate laser signals which can cause serious injury. The
guidelines below must be followed:
Check the connector configuration of the Fiber Optic Interfaces. If these are
fitted with a connector interface other than FC/PC then remove the existing
connector interface and fit the FC/PC connector interface.
Check for any damage to the HP 37717C Fiber Optic Interface spring loaded
aperture covers and connectors. Do not power up the instrument if in any doubt
about the integrity of these connectors.
Make all connections to the HP 37717C Fiber Optic Interfaces before powering
up the instrument.

Procedure

1. Connect the STM-1 Optical Out Port to the HP 8153A via the Optical Attenuator
(ensure that all connections are tight and that the cable has no twists). Set the Optical
Attenuator to ATTEN 0 dB, WAVELENGTH 1310 nm ; CAL=0.
2. Switch on the HP 37717C, check that immediately on power up the LASER ON
led on the Optical Module illuminates for a few seconds.
3. Recall the HP 37717C DEFAULT SETTINGS as shown on 3-2.
4. 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).
5. Press then
MODE
8153A.
6. Press
TRANSMIT
7. Verify that the Optical Module LASER ON led is on indicating the laser is
enabled.
8. Adjust the Optical Attenuator to obtain a reading of -28 dBm on the Power Meter.
9. Press select STORED SETTINGS NUMBER [0] (Default Settings) and
OTHER
press .
RECALL
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
to recall the default settings
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