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MD9612FP USER’S GUIDE

0049-1237-XXX

Page 11

REV.

A

SW2 DIP Switch Settings

SW2 is an 8-position DIP switch. Table 2-3 shows the modem switch

settings for DIP switch SW2. A description of the SW2 switch settings

follows the table.

Table 2-3. Modem Switch Settings for DIP Switch SW2

Switch Settings

Switches

ON

OFF (Default)

SW2-1: FSK Mode (page 12) V.23

Bell 202

SW2-2: Receiver Squelch
(page 12)
(valid for FSK mode, 2-wire
half-duplex operation only)

Turnaround Squelch
(Bell 202): 8ms

Turnaround Squelch
(V.23): 150ms

Turnaround Squelch
(Bell 202): 0ms

Turnaround Squelch
(V.23): 0ms

SW2-3: FSK Soft Carrier
(page 13)

Disabled Enabled

SW2-4 and SW2-5: FSK
RTS-CTS Delay
(page 13)

(see Table 2-4)

SW2-6: FSK CD Delay
(page 13)

23ms 6ms

SW2-7: Remote Loopback
(page 14)

Enabled Disabled

SW2-8: Reserved (Test Only)
(page 14)

Test Normal

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Содержание Myriad MD9612FP

Страница 1: ...MD9612FP USER S GUIDE 0049 1237 XXX Page i REV A Myriad MD9612FP Flash Poll Rack Mount Modem User s Guide ...

Страница 2: ...nd does not represent a commitment on the part of Raymar Information Technology Inc Raymar Information Technology Inc assumes no responsibility for any inaccuracies that may be contained in this User s Guide Raymar Information Technology Inc makes no commitment to update or keep current the information in this User s Guide and reserves the right to make changes to this User s Guide and or product ...

Страница 3: ...adio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and the receiver Connect the equipment to an outlet on a circuit other than the one to which the receiver is connected Cons...

Страница 4: ...8 SW2 DIP Switch Settings 11 SW3 DIP Switch Settings 14 INSTALLING THE MODEM 18 CONNECTING TO A TRANSMISSION LINE 19 Modular Jack Connectors 19 CONNECTING AN RS 232 DEVICE 20 LEDS 21 LOOPBACK CONTROL SWITCH 21 APPENDIX A TROUBLESHOOTING 23 PROBLEM SOLVING 23 APPENDIX B SPECIFICATIONS 24 GENERAL SPECIFICATIONS 24 MECHANICAL SPECIFICATIONS 25 BACK TO BACK CONNECTIONS TO A SECOND MODEM 26 RS 232 RTU ...

Страница 5: ...kward compatible with Bell 202 modems The modem can be installed in an Myriad Rack 18 slots 3U from Raymar Telenetics The modem occupies only one rack slot eliminating the hassle of equipment trays and power bricks required for Stand Alone modems The modem is powered from the modem rack The MD9612FP modem is ideally suited for multi point communication systems that require fast response time short...

Страница 6: ...in an extended temperature range of 40ºC to 85ºC Designed with coupling transformers for high voltage isolation and common mode noise rejection in industrial and commercial environments Asynchronous data rates selectable of 9600 4800 and 0 1800 bps Easily accessible DIP switches for user configuration and option selection Local analog local digital and remote digital loopback diagnostics Applicati...

Страница 7: ...tors that can affect the network s and modem s operation and performance These include Operating speed 2 wire or 4 wire configuration Transmission line characteristics noise and line impairments Network configuration point to point or multipoint Number of nodes on the network ...

Страница 8: ...ntents are damaged or missing please contact your place of purchase immediately Additional Items You Need To use your modem you need the following additional items An Myriad MDR Rack from Raymar Telenetics A two or four wire transmission line or leased line Hardware Overview Front View Figure 2 1 shows a front view of the MD9612FP modem Starting from the top this view shows A loopback test switch ...

Страница 9: ...nent view of the modem This view shows Three configuration switch blocks designated SW1 SW2 and SW3 See page 7 Jumpers located in various positions on the modem Do not change or remove the straps from these jumpers Edge connectors at the back of the modem which plug into the backplane of an MDR Rack from Raymar Telenetics ...

Страница 10: ...MD9612FP USER S GUIDE 0049 1237 XXX Page 6 REV A Figure 2 2 Component View of Modem Switch Block SW1 Switch Block SW2 Switch Block SW3 Edge Connectors Configuration Switch Blocks ...

Страница 11: ...e order shown to ensure that you configure your modem properly using the modem DIP switches 1 Use DIP switch 3 SW3 to configure the modem for your host DTE interface and network topology Using SW3 you select the modem to operate in high speed fast poll or low speed FSK mode 2 If you set SW3 for FSK mode in step 1 use DIP switch 2 SW2 to configure the modem for either Bell 202T or ITU T V 23 compat...

Страница 12: ...ttings apply for both high speed fast poll and low speed FSK modes Table 2 1 Modem Switch Settings for DIP Switch SW1 Switch Settings Switches ON OFF Default SW1 1 SW1 4 Transmit Level page 9 see Table 2 2 on page 9 SW1 5 Receiver Dynamic Range page 10 10 to 43 dBm 3 to 30 dBm SW1 6 TX Cable Equalizer page 10 Enabled Disabled SW1 7 RX Cable Equalizer page 10 Enabled Disabled SW1 8 Anti streaming p...

Страница 13: ...Table 2 2 Transmit Levels SW1 through SW4 Switch Settings Transmit Level SW1 1 SW1 2 SW1 3 SW1 4 0 dBm OFF OFF OFF OFF 1 dBm OFF OFF OFF ON 2 dBm OFF OFF ON OFF 3 dBm OFF OFF ON ON 4 dBm OFF ON OFF OFF 5 dBm OFF ON OFF ON 6 dBm OFF ON ON OFF 7 dBm OFF ON ON ON 8 dBm ON OFF OFF OFF 9 dBm ON OFF OFF ON 10 dBm ON OFF ON OFF 11 dBm ON OFF ON ON 12 dBm ON ON OFF OFF 13 dBm ON ON OFF ON 14 dBm ON ON ON ...

Страница 14: ...he fixed Compromise Cable Equalizer when polling on long metallic circuits The cable equalizer is active only when the modem is in fast poll mode SW3 1 set to OFF SW1 8 Anti streaming SW1 8 ON Anti streaming active OFF Anti stream inactive Typically anti streaming is used in multi point applications to prevent a malfunctioning slave modem from occupying the line indefinitely When anti streaming is...

Страница 15: ...itches ON OFF Default SW2 1 FSK Mode page 12 V 23 Bell 202 SW2 2 Receiver Squelch page 12 valid for FSK mode 2 wire half duplex operation only Turnaround Squelch Bell 202 8ms Turnaround Squelch V 23 150ms Turnaround Squelch Bell 202 0ms Turnaround Squelch V 23 0ms SW2 3 FSK Soft Carrier page 13 Disabled Enabled SW2 4 and SW2 5 FSK RTS CTS Delay page 13 see Table 2 4 SW2 6 FSK CD Delay page 13 23ms...

Страница 16: ...mode SW2 2 Receiver Squelch FSK Mode 2 Wire Half Duplex Only SW2 2 ON 8ms for Bell 202 150ms for ITU T V 23 OFF 0ms SW2 2 configures the turnaround squelch delay and is valid when the following are active FSK mode SW3 1 ON 2 wire half duplex operation SW3 7 ON Setting this switch to OFF configures the modem to enable its receiver immediately after the Request To Send RTS signal is turned off When ...

Страница 17: ...s how to set these switches to select the appropriate setting Table 2 4 RTS CTS Delay Settings in Bell 202 Mode To Select a Delay of Set SW2 4 to And Set SW2 5 to 8ms OFF OFF 33ms OFF ON 59ms ON OFF 219ms ON ON When the modem is configured for V 23 operation SW2 1 ON the RTS CTS delay is fixed at 33 ms SW2 6 FSK CD Delay Bell 202 Mode Only SW2 6 ON 23ms OFF 6ms SW2 6 selects the FSK CD delay and i...

Страница 18: ...ngs SW3 is a 10 position DIP switch Table 2 5 shows the modem switch settings for DIP switch SW3 A description of the SW3 switch settings follows the table Table 2 5 Modem Switch Settings for DIP Switch SW3 Switch Settings Switches ON OFF Default SW3 1 Fast Poll FSK page 15 FSK Fast Poll Auto Rate SW3 2 Data Rate page 15 4800 bps 9600 bps SW3 3 Async Character page 16 11 bits 10 bits SW3 4 Auto RT...

Страница 19: ... in RTS control mode It does not work in either constant carrier mode SW3 8 set to ON or in the auto RTS mode SW3 4 set to ON The DRS signal is only sampled when the transmitter is idle when not sending a preamble data or a turn off sequence Note that the DRS control both the transmitter and receiver If DRS changes states while the modem is receiving a preamble data or a turn off sequence the stat...

Страница 20: ...TXD is detected after 1 character length of idle time Auto RTS is used in fast poll mode only SW3 1 set to OFF SW3 5 Transmitter Termination SW3 5 ON Switched by RTS OFF 600 Ω SW3 5 is used for multi point configuration networks When multiple modems are connected on the same metallic circuit The transmitter termination should be of high impedance if the modem is not transmitting The transmitter is...

Страница 21: ...enabled SW3 8 set to ON the modem forces the transmit carrier active and the RTS CTS delay is minimum 0 5 ms You can use constant carrier in 4 wire point to point or multi point applications from master to slave modems In switched carrier mode SW3 8 set to OFF the RTS CTS delay is active SW3 9 RX Termination SW3 9 ON Enable Rx Termination OFF Disable Rx Termination SW3 9 selects whether RX termina...

Страница 22: ...he modem 1 Wear an antistatic wrist strap over your wrist on your bare skin not over a shirt or jacket 2 Remove the wrapping that is protecting the modem 3 Hold the modem so the front panel LEDs are facing you and the edge connectors are pointing to the backplane of the modem rack 4 Install the modem into the selected slot in the modem rack see Figure 2 3 5 Push firmly on the modem to seat it prop...

Страница 23: ...4 Modems Installed in the Rack Connecting to a Transmission Line Modular Jack Connectors The rear panel of the modem rack has an 4 pin RJ 11 jack for each slot After you install the modem into a slot connect the slot s corresponding RJ 11 jack to a leased line ...

Страница 24: ...e other modem The Tx line of the modem cage or modem rack RJ 11 jack must connect to the Rx line of the other modem For more information refer to the documentation that came with your modem cage or modem rack Connecting an RS 232 Device The modem cage or modem rack has different RS 232 options for accepting an attached RS 232 RTU device Your version may have a female 25 pin RS 232 connector for ea...

Страница 25: ...panel of the modem has a push button for initiating the following loopback diagnostic tests Local analog loopback started by pressing the button one time Local digital loopback started by pressing the button two times Remote digital loopback set the local modem s RTS signal to low Then press the modem s diagnostics button three times and raise the local modem s RTS signal to start the test The ALB...

Страница 26: ...MD9612FP USER S GUIDE 0049 1237 XXX Page 22 REV A Figure 2 6 Loopback Diagnostics ...

Страница 27: ...oblems Table A 1 Troubleshooting Suggestions If Perform These Procedures Modem does not respond and all LEDs are off Check the modem rack power supply module s Modem does not receive data and the DCD and RxD LEDs are off The receive line pair may be disconnected from the modem Make sure the transmission line connection to the rear panel of the modem rack is accurate and secure The receive signal l...

Страница 28: ...up to 9 5 miles 24 AWG without cable equalizer Up to 15 0 miles 24 AWG with TX and RX cable equalizer Operating modes 2 wire half duplex or 4 wire full duplex Modulation High speed fast poll Raymar Telenetics proprietary FSK Bell 202T compatible Mark 1200 Hz Space 2200 Hz Soft Carrier 900 Hz Equalizer Automatic adaptive RTS CTS Delay 23 ms fast poll 8 33 59 or 219 ms FSK Receiver dynamic range 0 t...

Страница 29: ...t delay Less than 10 milliseconds for fast polling Auto RTS Support DTE without hardware RTS high speed only Anti Streaming 27 second timer to prevent transmitter lock up network Mechanical Specifications Dimensions 7 25 inches deep x 5 25 inches high x 77 inches thick Weight 4 5 ounces card only ...

Страница 30: ...ure D 3 RS 232 RTU Interface Signal Name Modem Input Output DB25 Pin Description Earth GND 1 Earth Ground TXD Input 2 Transmit Data RXD Output 3 Receive Data RTS Input 4 Request To Send CTS Output 5 Clear To Send DSR Output 6 Data Set Ready Modem Ready SG 7 Signal Ground DCD Output 8 Data Carrier Detected DTR Input 20 Data Terminal Ready Host Ready ...

Страница 31: ...49 1237 XXX Page 27 REV A Environmental Specifications Operating temperature 40 to 85o C Storage temperature 40 to 125o C Operating humidity 5 to 95 non condensing Isolation 3750 V RMS Surge protection Leased line up to 15K VA ...

Страница 32: ...UCT FOR ANY LOSS OF USE LOSS OF TIME INCONVENIENCE COMMERCIAL LOSS LOST PROFITS OR SAVINGS OR OTHER INCIDENTAL SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THIS RAYMAR PRODUCT TO THE FULL EXTENT SUCH MAY BE DISCLAIMED BY LAW WITHOUT LIMITING THE FOREGOING RAYMAR SHALL HAVE NO LIABILITY FOR ANY DATA STORED IN OR USED WITH THE PRODUCT INCLUDING THE RECOVERY COSTS OF SU...

Страница 33: ...f known Please note that prior to authorizing a return a product support specialist may call to verify that the product is properly installed or may ask you to perform tests to insure that the product has actually failed The product must be properly packed and returned to Raymar Telenetics 7325 Roseville Road Sacramento CA 95842 The RMA number must be legibly displayed on the shipping carton Rayma...

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