Yokogawa AQ6361 Optical Spectrum Analyzer

（2） Fault handling and warning information

Common faults and countermeasures:

|Fault phenomenon | Possible causes | Response measures|

|No response upon startup | Power cord not connected properly, power voltage mismatch | Check power cord connection, confirm voltage is within the range of 90-264VAC|

|Abnormal measurement data | Optical interface contamination, wavelength calibration not performed | Clean optical interface, wavelength calibration performed|

|Communication failure | Loose USB/Ethernet connection, incorrect IP address | Reconnect the cable and check the IP address (default 192.168.1.100)|

Warning message interpretation: Chapter 5.7 of the manual provides a detailed list of 380+warning messages, with the core categories as follows:

|Warning type | Scope | Example and reason|

|Warning after function execution | 1-49 | 'Unsuitable resolution' (resolution setting does not match span/sample size, which may result in incomplete data extraction)|

|Function unable to execute warning | 50-199 | "USB storage not found" (USB storage device not inserted)|

|Hardware malfunction warning | 200-299 | "Fan motor stopped" (the fan stops running and automatically shuts down after 10 seconds, please contact maintenance)|

Core technical parameters

The key specifications of AQ6361 vary depending on the model (Standard Type -10/High Performance Type -20) and wavelength range (- SW/- EW), with the following core parameters:

Parameter Category Standard Type (-10) High Performance Type (-20)

Wavelength range SW: 1200-1700nm; -EW: 700-1700nm same standard type

Wavelength accuracy - SW: ± 0.02nm (1520-1580nm), ± 0.04nm (1580-1620nm) - SW: ± 0.02nm (1450-1620nm)

Wavelength resolution of 0.05, 0.1, 0.2, 0.5, 1, 2nm 0.03, 0.05, 0.1, 0.2, 0.5, 1, 2nm

Level sensitivity TRAD mode: -80dBm (1300-1620nm, HIGH2); RAPID mode: -73dBm (1300-1620nm, RAPID6) same standard type

Maximum input power+20dBm (single channel),+25dBm (total input power) same as standard type

Scanning time TRAD mode (NORM-AUTO): 0.2s (span ≤ 100nm, sample size 1001) Same as standard type

Suitable for single-mode (SM: 9.5/125 μ m) and multi-mode (GI: 50/62.5 μ m) equivalent standard types of optical fibers