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The Model 7500 Mini-OTDR ( OPTICAL TIME DOMAIN REFECTOMETER ) offers >32dB
of Dynamic range, 20 meter attenuation dead zone and 5 meter event dead zone.
There is an Auto Test function and information is displayed on a 9.4-inch , VGA,
LCD screen.
The Model is ideal for use in telecom , CATV, LAN, and
manufacturing applications.
TELECOM
The Model 7500's
dynamic range can be used for testing long trunk or interoffice fiber spans. The
unit's short dead zone allows closely spaced features to be measured. Configured
with the visual fault locator option, the Model 7500 will troubleshoot fiber in
splice cabinets/enclosures, giving a virtual "zero" dead zone
performance.
CATV
The Loss Table automatically
calculates the reflectance of mechanical splices as well as the Optical Return
Loss (ORL) for the fiber span. The optional OTDR emulation software for your PC
allows you to analyze data and generate hard copy documentation in your
office.
LAN
The Model 7500 offers single-mode and
multimode plug-ins that can be used in LAN applictations where there is a need
to test different types of fiber cable or composite cable. The Auto Test
function allows fast, easy measurements without a skilled operator. Size,
weight, and battery operation give the Model 7500 optimum portability. (includes
only Single-Mode Module 742s)
MANUFACTURING
The
Model 7500's dynamic range and accuracy make it convenient for quick distance
measurements on the production floor. Attenuation and lenght of fiber may be
obtained quickly by generating a Loss Table.
Specifications:
| Acquisition/Distance Range (KM) |
4,8,16,32,64,128,256 |
| Distance Accuracy |
±0.8 Meters ±0.01% of length measured |
| Distance Readout Resolution |
10.0cm |
| Refractive Index Range |
1.4000 to 1.7000 |
| dB Linearity |
0.05dB/dB |
| Loss Modes |
2pt, LSA (dB/KM), auto or manual splice (dB),
reflectance (dB), Power Meter (dB, dBm, Watts), ORL (dB) |
| Display |
9.4" diagonal, backlit, VGA (640 x 480) LCD |
| Storage |
Internal RAM, 1.44MB 3-1/2" disk drive
option |
| Weight |
3.2kg (7lbs) |
| Dimensions |
34.3cm x 24.1cm x 7.6cm (13.5in x 9.5in x
3.0in) |
| Battery Life |
> 6 hours (rechargeable), 180 scans |
| External Power |
85-264VAC/47-440Hz; 10-15VDC |
| Interfaces |
RS-232C, parallel, keyboard accessory port (data
entry) |
742S Singlemode Module:
| Center Wavelength (nm) |
1310/1550 ± 20 |
| (m) Pulse
Width (sec) |
Dynamic Range |
| 1000 |
10.0µs |
34.0/32.0 |
| 500 |
5.0µs |
32.5/30.5 |
| 100 |
1.0µs |
29.0/27.0 |
| 50 |
500.0ns |
27.5/25.5 |
| 10 |
100.0ns |
24.0/22.0 |
| 50 |
50.0ns |
13.0/11.0 |
| 2.5 |
25.0ns |
11.0/9.0 |
| 1 |
10.0ns |
9.0/7.0 |
| Attenuation Dead Zone (m) |
20.0/25.0 |
| Event Dead Zone (m) |
5.0 |
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