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ALL MODEMS ARE NOT ALIKE!
Commercially available modems are generally
not suitable for use in roadside applications. The
temptation is strong to use least-cost modems,
but Peek and its customers have found out
through direct experience that commercial indoor
modems, and even “industrial” modems, can
have low reliability in field use.
That’s why Peek offers the LPM 33, specifically
designed to provide data communications in
roadside applications requiring remote access via
standard dial access telephone service. It is
designed to meet the rigors imposed by extreme
outdoor data collection and control cabinet
environments. It is designed to operate over a
temperature range of -40ºF to +162ºF (-40ºC to
+72ºC).
The LPM-33 can be powered by any source in
the range from 5 to 36 Vdc. It features a low
power standby mode that allows it to be battery
powered. In standby mode, the LPM-33 requires
less than 0.5mA of current at 12 Vdc. A solar
panel-charged battery provides a fully
satisfactory method of powering the LPM 33.
Alternatively, the LPM 33 can be powered by a
nominal 12 Vac from an available AC to DC wall mount transformer for use with any 120 VAC
outlet.
Baud rates up to 33,600 are supported by the
LPM 33. It is fully compatible with applicable Bell
and CCITT standards, including those for error
correction and data compression. The
LPM 33 will operate in auto-answer and
originate modes.
The LPM 33 uses several timers to reduce net
power consumption in typical applications. Sixty
seconds after the termination of ringing voltage
or 120 seconds after stopping of DTE data the
LPM 33 will automatically revert to its low power
standby mode. Standby mode will also occur 10
seconds after the loss of carrier is detected. The
standby mode of the LPM 33 can be disabled,
leaving the modem in continuous active mode.
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(Click image to enlarge)
Two Year Limited Warranty
Peek Traffic, Inc. warrants this product against manufacturing
defects in materials and workmanship for two years from
date of shipment from Peek. Specific contracts and regional
laws may vary or alter these terms.
Additional Information
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Specifications |
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Modem Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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CCITT: V.34, V.32 bis, V.32, V.22 bis, V.22, V.21
Bell: 103, 212A |
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Error Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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MNP 2-4, LAP-M |
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Data Compression . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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MNP 5, V.42 bis |
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Command Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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Hayes AT; Additional AT commands for data compression, error correction, cellular operation |
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Interface to DTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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Type: RS-232, DB 25 connector
Speed: Auto-detects with AT command, up to
115,200 Baud
Signaling: N-8-1 |
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Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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Speed:Baud rates to 33,600
Type: Auto-answer and originate |
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Profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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2, set to factory default, user-definable, stored in
non-volatile E2PROM |
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Mode Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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Standby (normal): Awaiting ringing voltage or DTE
data, flashing green LED.
Standby to Active: Transitions within 6 seconds of
ringing voltage or 200 msec of DTE data, LED on
steady
Answer: After transition to active mode answers call
in accordance with S0 register setting for ring delay
Disconnect: Loss of carrier, DTR drop or on-hook AT
command
Active to Standby (selectable link controlled):
Active Connection – 10 seconds after loss of carrier;
No Connection – 60 seconds after last ring or 120
seconds after last DTE data |
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Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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nternal: Jumper JP1 disables standby operation if
jumper is on
External: All operational control is via RS-232
connector |
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LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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Standby: green, flashes awaiting call
Ringing: red
Send Data: red
Receive Data: red
Carrier Detect: red
Off Hook: red |
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Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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Voltage:
5.0 to 36 Vdc; 12 VDC typical;
wall mount
transformer for 120 VAC source - Stancor STA
4112A.
Consumption:
Standby – 0.5mA @ 12 VDC
maximum;
Active – 85 mA @ 12 VDC typical |
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Physical . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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Size: 1.9” H x 5.3” W x 8.6” D
Weight: 20 oz. |
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Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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Storage: -40ºF to +185ºF (-40ºC to +85ºC)
Operating: -40ºF to +162ºF (-40ºC to +72ºC)
Humidity: 0 to 95%, non-condensing |
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