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A-7
IM 39J06B40-01EN 14th Edition: May 30, 2022
A1.3. OPTICAL SWITCH MODULE
Installing an optical switch module (2, 4 or 16-channel model) allows monitoring of
multiple optical fibers using a single DTSX3000 system.
An optical switch module can also be used in double-ended measurement using
DTSX3000.

Specifications
Table Specifications of Optical Switch Module (*4)
Item Specifications
Model DTOS2L DTOS4L DTOS16L
Insertion loss (*1)
0.8 dB (Typical) (*2)
1.4 dB (Max.)
Distributed
temperature
measurement
Measurement
type
Single end, Double end
Sensor optical
fiber
Optical fiber 50/125 µm GI, closed end, non-reflection required
Optical
connector
E2000/APC
Optical
channels
2 channels 4 channels 16 channels
Interface
Control Controlled by DTSX3000
Display LEDs: HRDY, RDY, Alarm, Active channel
Power supply Consumption
Operating 4 W
Power save 1 W
Dimensions (W x H x D) (*3)
71.65 x 130.0 x 160.3 mm
(2 slots width)
Weight 0.63 kg 0.65 kg 0.75 kg
*1: One-way loss
*2: These values indicate typical performance at 23 °C ambient temperature but are not performance specification
values.
*3: Dimensions exclude protective cap of optical connector.
*4: Refer to GS 39J06Z40-01EN in the case of specification of DTSXL for single mode fiber.
Note: As a guideline, the module should be replaced periodically every 4.7. 6 and 9.5 years for continuous operation of 15-
second, 20-second and 30-second measurements, respectively.