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RS-232 Interface Tester with Overvoltage Protection
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Serial signals all at one glanceThe RS-232 Interface Tester (Fig. 1) can display serial RS232 signals (at a SUB-D9 interface). The interface tester is installed at an existing serial connection. Its two jumper blocks allow you to switch through signals individually.
The interface tester offers easy direct switching from 1:1 mode to modem or null modem as well as a loop-back connection which saves additional cables.
Its seven bicolor LEDs indicate whether a line signal is active (high/low, +/-). |
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On the input side of the RS 232 interface, a multi-pin connector provides easy 1:1 access to all interface pins, allowing you to perform tests (e.g. with a multimeter test set, oscilloscope, etc.) during runtime.
For maximum protection, we have equipped the output side of the RS 232 Interface Tester (sub D connector) with suppressor diodes (signals to GND) and a decoupling capacitor (between the screen and GND). The suppressor diodes provide overvoltage protection, activated at signal levels higher than 18V (Fig. 2).
All these features are compactly integrated on less than 4.2cm X 9.3cm. |
Fig. 2: Overvoltage protection |
Advantages of the RS232 Interface Tester:
- Individual signal configuration (speed selection of 1:1, modem, null modem and loop-back thanks to simple jumper settings)
- Visual diagnostic indicators for the DTR, DSR, RXD, RTS, CTS, and DCD signals with clearly arranged bicolor LEDs
- Test points for direct access to the input side of RS232 SUB-D9 connector (for connecting devices such as multimeter test sets, oscilloscopes, etc.)
- Overvoltage protection through suppressor diodes at every signalling line to ground and decoupling capacitor (activated at output signal power >18V)
- Excellent workmanship with high-quality components and professional design
- Compact size (small measurements) facilitates testing in locations with difficilt access
- No DB25 to DB9 adaptors required
- Only one cable required for all tests
- Additional test adapters are not required because they have already been integrated.
Numerous integrated functions make accessory components such as adapters, cables, etc. unnecessary.
Compared to most other interface testers our product does not require any DB25 to DB9 adapers which create additional sources of possible error. |
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Application
Wide range of application areas
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| Testing and monitoring of serial RS232 interfaces |
| Overvoltage protection for tested devices |
Compact design provides easy access even in difficult locations
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| Supports frequently changing cable configurations |
| Research and development |
| Function testing of serial interfaces |
Ideal companion for the service technician
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... and more
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Specifications
RS-232
Interface-Tester | Specifications |
| Interfaces |
1 x RS232 SUB-D9 jack (full pin configuration)
1 x RS232 SUB-D9 plug (full pin configuration) |
| 9-pin row for measuring instruments |
| Diagnostics LEDs |
TXD, RXD, DTR, DSR, RTS, CTS, DCD,
each in 2 colors (gn/rd)
for displaying voltage level (+/-) |
| Power supply |
RS232 Interface |
| Casing |
Plastic case |
| Measurements w/h/d |
Approx. 93/20/42 mm |
| Operating/Storage temperature |
5° C to 55° C / -10° C to 70° C |
| Relative humidity |
5 % to 90 %, non-condensing |
| Overvoltage protection |
Overvoltage protection at >18V due to suppressor diodes at each signal line against GND. Screen-lateral overvoltage protection due to capacitor. |
| Scope of supply |
RS-232 Interface Tester
10 jumpers
Readme |
| Purchase order number |
0202021 |
| Pricing in EUR plus VAT |
49.00 |
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