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Installation, Operation & Diagnostics
for the
MIU9.6FPD
Industrial Grade, Digital Fast Poll
Standalone Modem
Document No. 49-0002-013 Rev. A
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Telenetics Corporation
26772 Vista Terrace Drive
Lake Forest, California 92630
(949)455-4000
Fax (949)455-4010
Document No. 49-0002-013 Rev. A
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TABLE OF CONTENTS
1. STANDARDS.............................................................................................. 2
2. PRODUCT OVERVIEW ........................................................................... 3
3. GENERAL PRODUCT SPECIFICATIONS ............................................ 4
4. MODEM SPECIFICATIONS ................................................................... 5
5. ANALOG LINE SPECIFICATIONS ........................................................ 7
6. ANALOG MICROWAVE INTERFACE.................................................. 8
7. POWER CONNECTIONS........................................................................ 10
8. SERIAL DATA PORT PIN-OUT ............................................................ 11
9. DIP SWITCH FUNCTIONS..................................................................... 12
10. MODEM CONFIGURATION ................................................................. 14
11. LED INDICATOR..................................................................................... 15
12. OUTLINE DRAWING & MOUNTING.................................................. 16
13. DIAGNOSTICS ......................................................................................... 17
MIU9.6FPD Installation, Operation & Diagnostics April 25, 1998 Page 1
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1. STANDARDS
Meets FCC Rules Part J, Subpart 15, Class A for radiated emissions.
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2. PRODUCT OVERVIEW
The MIU9.6FPD is an industrial grade Digital Fast Poll modem designed
for multidropping applications over unconditioned metallic lines (eg;
pilot wires). Available as single channel device (MIU9.6FPD), 2-channel
device (MIU9.6FPD/D) or repeater (MIU9.6FPD/R)
The MIU9.6FPD can be powered from a wide range of AC and DC
power supplies, it is internally surge protected on both the power and
analog lines, and it will operate in temperatures from -40 to +85 deg C.
Internally, the MIU9.6FPD consists of a baseboard and a
communication module. The baseboard includes the power supply
regulation and surge protection. The communication module is a
Telenetics™ Pony Express™ PE9.6FPD Modem Module.
The MIU9.6FPD is packaged specifically for the harsh environments
found in utility substations and industrial facilities. Though functionally
similar to commercial modems, the MIU9.6FPD includes special features
that make it particularly well suited for utility and industrial applications:
Environment: The MIU9.6FPD has been designed specifically for use
in harsh environments. In addition to an extended
temperature range (-40 to +85º C), the MIU9.6FPD
includes surge, shock, vibration, and safety features
superior to those of conventional commercial modems.
Power Supply: The MIU9.6FPD can be powered from a broad range of
AC and DC power supplies, such as an auxiliary supply
(eg; 12VDC) from another piece of equipment,
125VDC from a station battery or a standard 120VAC.
Industrial: The MIU9.6FPD is packaged in a rugged, compact,
non-metallic (ABS) enclosure. Designed for unmanned
locations, the MIUs do not include the array of
pushbuttons and LEDs normally associated with
consumer-type modems. Configuration is by dip
switches. Standard industrial connectors for data,
analog and power interfaces allow reliable
interconnection to other industrial components.
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3. GENERAL PRODUCT SPECIFICATIONS
Dimensions: 5.3 x 4.0 x 1.375 inches
Weight: 1 lb
Voltage Supply: Standard Model: 40 to 270VDC
40 to 270VAC, 50/60Hz
LV Model (Suffix “-LV”): 9 to 36VDC
Current Requirements:
12VDC 24VDC 125VDC 120VAC 220VAC
MIU9.6FPD
MIU9.6FPD/D
MIU9.6FPD/R
Surge Protection: Power Supply: 8kVrms
Analog Line: 3.75kVac IEC255-5
Digital Line: ESD ± 10kV
Operating Temperature: -40 to +85 deg C
Operating Humidity: 0 to 90% (non-condensing.)
Storage Temperature: -55 to 100 deg C
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4. MODEM SPECIFICATIONS
Modulation: Pulse Position Modulation (PPM)
Synch/Async: Asynchronous Only
Data Rate: 0 – 1200bps
Error Correction: None
Data Compression: None
Data Modulation Connectivity: Using 16ms Polling Test
99.999% or better at -37dBm
99.5% or better at -40dBm
95% or better at -43dBm
Serial Formats and Flow Control:
Asynchronous and RTS/CTS flow control
Analog Interface
Tx Output Level: -0 dBm or -10 dBm *
Rx Sensitivity: -43dBm or -33dBm *
-43dBm for constant carrier
-40dBm for polling carrier
Line Termination: Dip Switch Selectable *
Line Impedance: 600 ohms balanced
2 or 4 Wire Configuration: Dip Switch Selectable *
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Other Features
Receiver Equalization: Compromise Equalization
Self Test Diagnostics: None
Local Analog Loopback: See Section 13
Local Digital Loopback: See Section 13
Remote Analog Loopback See Section 13
Remote Digital Loopback See Section 13
Anti-Streaming: OFF or 45 Seconds (+ 5 sec) *
RTS/CTS delay: 1ms, 12ms, 35ms or 50ms (+5%) *
Note: Soft Carrier will effect
RTS/CTS delay time (see Dip
Switch Settings ~ Section 8)
Constant Carrier Switch Selectable ON or OFF
Soft Carrier Turn Off 20ms of 900Hz after RTS is turned
Off
Carrier Turn ON/OFF 8ms +0.5ms
* Dip Switch Selectable ~ See Section 9
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5. METALLIC CONDUCTOR SPECIFICATIONS
The MIU9.6FPD contains digital circuitry for connection 2 or 4-wire
metallic conductors (eg; pilot wires). The MIU9.6FPD will also interface
to Power Line Carrier or Microwave radio voice channel networks.
The MIU9.6FPD has an RJ-11terminated connector. The following lists the
MIU9.6FPD conductor interfaces
Conductor Type:
Conditioned or unconditioned, Bell type 3002, 2 or 4-wire, full duplex
voice grade or metallic lines or better.
Analog Line Specifications:
Bandwidth 300 Hz to 3400 Hz (±3dB)
Impedance 600 / 900 ohms , balanced
Frequency Response 400 to 3000Hz (±2dB)
Receiver Input Level -16dBm max.
Output Level +7 dBm
Noise Signal Level -48 dBmO
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6. POWER CONNECTIONS
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7. SERIAL DATA PORT PIN-OUTS
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8. DIP SWITCH FUNCTIONS
IMPORTANT NOTE: Invert modem to view dip switches as shown above
Table 1
Switch Function ON OFF
Switch 1 Antistreaming
Switch 2
Switch 3 Data Rate = 19200 bps
Switch 4 Data Rate = 9600 bps
Switch 5 Data Rate = 4800 bps
Switch 6 Data Rate = 2400 bps
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9. LED INDICATOR
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10. OUTLINE DRAWING & MOUNTING
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11. DIAGNOSTICS
The following pages provide hardware techniques for diagnosing
communication problems and thereby isolating the problem at the local
modem, the remote modem or the interconnecting line.
(a) LOCAL ANALOG LOOPBACK (Figure 2)
Requires a loop back cable with a built-in circuit for line loss to
simulate a typical leased line condition (See Figure 3).
Connect the loop back cable to the RJ11 connector on the modem
under test.
Set Dip Switches as follows…
Switch 7 = OFF 4-Wire
Switch 9 = ON Soft Carrier Turn Off Enabled
Switch 1 = ON Transmit (TxA) Signal Level = 0dBm
Switch 3 = ON Receive (RxA) Signal Level = –33dBm
Switch 6 = OFF Switched Carrier
Switch 4&5 = ON RTS/CTS Delay = 50ms
Test 1: RTS/CTS Analog Control
Set RTS “ON” and check that CD (Carrier Detect) turns
“ON”.
Turn RTS “OFF” and ensure that CD turns “OFF”
With RTS “ON”, run a test message at TxD and verify that
the same message is received at RxD with no data errors.
Test 2: Transmit Signal Power & Receive Levels
Set Dip Switch 1 OFF (TxA = -10dBm)
CD will be OFF.
Change Dip Switch 1 to ON (TxA = 0dBm)
CD should now be ON.
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Test 3: Received Signal Level
Set Dip Switch 1 OFF (TxA = -10dBm) and Dip Switch 3
OFF (RxA = -43dBm).
CD will be ON.
Run a test message at TxD and verify that the same message
is received at RxD with no data errors.
Test 4: Repeat Test 3 for various RTS/CTS delay times and with
soft carrier ON and OFF.
(b) LOCAL DIGITAL LOOPBACK – 4/Wire Network (Figure 4)
On the modem under test, connect TxD to RxD
Switch 1 = ON (TxA = 0dBm)
Switch 3 = ON (RxA = -33dBm)
Switch 4 = OFF (RTS/CTS = 35ms)
Switch 5 = ON (RTS/CTS = 35ms)
Switch 6 = ON (Constant Carrier mode).
Switch 7 = OFF (4-Wire)
Switch 8 = ON (Line Termination = 600 ohms)
Switch 9 = ON (Soft Carrier = ON)
Transmit a test message from a remote modem and confirm that the
same message is received back at RxD on the remote modem with no
data errors.
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(c) REMOTE DIGITAL LOOPBACK – 4/Wire Network (Figure 5)
Configure both the local and remote modems as follows:
Switch 1 = ON (TxA = 0dBm)
Switch 3 = ON (RxA = -33dBm)
Switch 4 = OFF (RTS/CTS = 35ms)
Switch 5 = ON (RTS/CTS = 35ms)
Switch 6 = ON (Constant Carrier mode).
Switch 7 = OFF (4-Wire)
Switch 8 = ON (Line Termination = 600 ohms)
Switch 9 = ON (Soft Carrier Turn Off = ON)
Connect TxD to RxD at the remote modem.
Transmit a test message from the local modem and confirm that the
same message is received back at RxD on the local modem with no
data errors.
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(d) LINE DIAGNOSTICS
(i) Typical modem configuration for 4-wire Point-to-Point system…
Switch 1 = ON (TxA = 0dBm)
Switch 3 = ON (RxA = -33dBm)
Switch 4 = OFF (RTS/CTS = 1ms)
Switch 5 = OFF (RTS/CTS = 1ms)
Switch 6 = ON (Constant Carrier mode).
Switch 7 = OFF (4-Wire)
Switch 8 = ON (Line Termination = 600 ohms)
Switch 9 = OFF (Soft Carrier = OFF)
(ii) Typical modem configuration for 4-wire Multi-Point system…
Switch 1 = ON (TxA = 0dBm)
Switch 3 = ON (RxA = -33dBm)
Switch 4 = OFF (RTS/CTS = 1ms)
Switch 5 = OFF (RTS/CTS = 1ms)
Switch 6 = ON (Constant Carrier mode).
Switch 7 = OFF (4-Wire)
Switch 8 = ON (Line Termination = 600 ohms)
Switch 9 = OFF (Soft Carrier = OFF)
Adjustments…
In a network with high line loss (greater than 16dB) change Switch 3
(RxA) to OFF (-43dBm).
If there are conditions that can cause cross-talk (TxA leaking into RxA
path) set Switch 1 (TxA) to OFF (-10dBm).
Note that noise level should be –50dBm or lower for most FSK
operation (signal-to-noise ratio of 15dB or higher)
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NOTES:
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