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5.1 INTRODUCTION

This chapter contains general information designed to isolate a malfunction in the Model

F22XX to a replaceable unit. These units are not equipped with redundancy. Therefore, a
failure in one of these units would interrupt service.

5.2 FAULT

ISOLATION

The steps in Table 4 should be taken to check a non-operating Modem.

STATUS INDICATOR

PROBABLE CAUSE

CORRECTIVE ACTION

POWER (PWR) LED is off. No AC power.

Check that both ends of the Transformer are
connected.

Blown Fuse.

Replace with 250V 1A slo-blo fuse.

Содержание F2238

Страница 1: ...E040619643 F2238 F2240 F2245 FOM II Series RS 530 High Speed Fiber Optic Modem Technical Manual June 2004 Copyright June 2004 VERSITRON Inc 83 Albe Drive Suite C Newark DE 19702 www versitron com...

Страница 2: ...livery VERSITRON reserves the right to repair or at our option replace parts which during normal usage prove to be defective during the warranty period provided that 1 You call VERSITRON at 302 894 06...

Страница 3: ...SETTINGS 6 2 4 1 Polarity Straps 6 2 4 2 Jumpers For Input Impedance Selection 7 2 4 3 Jumpers For Transmit Clock Selection 7 2 4 4 Jumpers For Receive Clock Selection 7 2 4 5 Settings for Balanced U...

Страница 4: ...URE TITLE PAGE 1 OVERALL VIEW 2 2 MODEM LINK CONFIGURATION 3 3 MODEM JUMPER AND TEST POINT LOCATIONS 6 LIST OF TABLES TABLE TITLE PAGE 1 ENCLOSURES CHASSIS 3 2 JUMPER SETTINGS 6 3 ELECTRICAL DB25 INTE...

Страница 5: ...tional Characteristics Model F22XX modems are high speed modems that allow the full duplex transmission of data clock and a control signal data terminal ready DTR data set ready data carrier detect DS...

Страница 6: ...installed into the HF 20A chassis model AC300WR power supply is used to provide power to the chassis and to the modems Power is provided from the AC300WR power supply to the HF 20A chassis via model...

Страница 7: ...Ground 1 1 Frame Ground LOCAL MODEM DCE DCE REMOTE MODEM Produced by local modem not received from remote modem Signal not physically passed used to control signal flow through local modem FIGURE 2 F2...

Страница 8: ...quirements 12 VDC 1 5A 18 watts optional VAC to VDC wall transformer VERSITRON Model PSAC15 120 VAC 60 Hz to 12 VDC 1 5A VERSITRON Model PSAC09 230 VAC 50 Hz to 12 VDC 1A Environment 0 to 50 C 32 to 1...

Страница 9: ...SAC09 European providing 12 VDC 1A Connect the power adapter to the F22XX modem before inserting its plug into an AC power source No special tools are required DC power may be used instead of an AC ad...

Страница 10: ...The transmitter operating mode is controlled by jumper JP1 For automatic rate dependent selection of transmitted synchronous clock and data set JP1 3 4 To have the input data stream synchronized to th...

Страница 11: ...INPUT TX CLK A 24 INPUT TX CLK B 11 INPUT DTR A 20 INPUT DTR B 23 INPUT RX D A 3 OUTPUT RX D B 16 OUTPUT RX CLK A 17 OUTPUT RX CLK B 9 OUTPUT DSR A 6 OUTPUT DSR B 22 OUTPUT DCD A 8 CONNECTED INTERNAL...

Страница 12: ...optic cable is crossed transmit to receive from unit one to unit two and vice versa 3 The LOOP LED illuminates when a link is established to the remote optical receiver of the F22XX Note that the LOO...

Страница 13: ...internal 10 MHz oscillator as the code time base This high sampling rate minimizes jitter caused by sampling within the transmit circuit At higher clock rates the transmit clock itself is selected as...

Страница 14: ...the data rate may be variable as is sometimes seen in high speed telemetry systems An internal bit rate monitor circuit selects the source of the transmit clock At clock rates of less than 100 Kbps o...

Страница 15: ...al signal level received at receiver input 1 Check that fiber optic cable is properly connected to RX connector 2 Check that the remote unit power is on and the TX fiber optic connector is connected p...