Model 91090 & 91091
Digital Wattchman Monitor/Alarm Systems µðÁöÅÐ ¹æ¼Û¿ë Watt ÃøÁ¤±â CDMA, DAB, DTV, HDTV, CW, AM, FMÀÇ RF ÆÄÇü ÃøÁ¤ °¡´É ºñÁ¤»ó ºÎÇÏ °ËÆĽà 0.015Ãʳ»·Î ÀÚµ¿ ȸ·Î ´ÜÀý Line Section, Elements´Â º°¸Å ÆÄ¿ö ¹üÀ§ : 100W ~ 100kW ÁÖÆļö ¹üÀ§ : 54 MHz ~ 806 MHz 91090 : ½ºÅÄ´Ùµå 5/10/25 ½ºÄÉÀÏ 91091 : 15/30/60 ½ºÄÉÀÏ Features
Protects Your Transmitter From High
Reflected or Low Forward Conditions
Continuous Display Of Forward
and Reflected Power
Audible and Visual Alarms
Fast Fault Response (15ms)
Remote Reset Provision
110/220 VAC Input Switch
Amplified DC Outputs
Two Year Limited Warranty
Description
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The Coaxial Dynamics 'Digital Wattchman' Rack Mounted Station Monitor/Alarm is similar in function and appearance to our 81090 Series except it is designed for the accurate measurement of complex RF Waveforms such as CDMA (Code Division Multiple Access), DAB (Digital Audio Broadcast), DTV (Digital TV) and HDTV (High Definition TV), as well as CW, AM and FM.
A Digital Station Monitor/Alarm system installation consists of a Digital Wattchman, a dual socket Line Section and two Digital Broadcast Plug-In Elements for monitoring both forward and reflected power. The Digital Wattchman is supplied with four 25-foot cable assemblies for connection to the line section and elements, and a 6 foot AC power cord. Installation requires inserting the line section and elements into the transmission line, connecting the terminals of the transmitter interlock systems to the proper terminals on the Digital Wattchman and providing AC power. (Line Sections and Digital Elements are sold separately.)
Both models feature adjustable forward and reflected trip adjustments, a built in DC amplifier and 110/220 VAC input switch. Model 91090 has our standard 5/10/25 scales and Model 91091 has 15/30/60 scales.
Abnormal load conditions quickly cause transmitter shutdown within less than 15 milliseconds (including control relay). An audible single tone alarm will indicate system/transmitter malfunction. Relay contacts are provided for remote alarm and reset switching. Fail-Safe or Non-Fail-Safe mode is selected by a switch located on the rear of the instrument.
Your confidence in the quality and dependability of the Models 91090 and 91091 Digital Wattchman is assured with the Coaxial Dynamics Two Year Limited Warranty.
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Power Range |
100 W to 100 kW |
Frequency Range |
54 MHz to 806 MHz |
Meter Type |
4-1/2 inch mirrored scale movement |
Accuracy |
¡¾5% when used with proper Coaxial Dynamics line sections and elements |
Response Time |
Less than 15 milliseconds (including control relay function) |
Front Panel Controls
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Push button reset Trip set adjustments |
Rear Panel Controls
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Audible alarm switch Fail-Safe mode switches 110/220 VAC input switch |
Connections
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Meter inputs NO/NC control connections Remote alarm connections Remote reset connections AC power receptacle Amplified DC Outputs Element Connections |
Contact Ratings |
5A at 110 VAC non-inductive |
Power Requirements |
110/220 VAC, 50/60 Hz, 10 Watts maximum |
Dimensions (H x W x D) |
5.25 in. (13.3 cm) x 19 in. (48.3 cm) x 8 in. (20.3 cm) |
Weight |
6.5 lbs. (2.95 kg) |
Finish
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Textured Blue Polyurethane Enamel Front Panel Alodine (Yellow Iridite) Chassis |
Please note: Line Sections and Digital Elements are sold separately. |
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