Holland Electronics HMMS-25 Handleiding


Lees hieronder de 📖 handleiding in het Nederlandse voor Holland Electronics HMMS-25 (2 pagina's) in de categorie Niet gecategoriseerd. Deze handleiding was nuttig voor 46 personen en werd door 2 gebruikers gemiddeld met 4.5 sterren beoordeeld

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HMMS
Fixed Channel SAW Filtered Modulator
HMMS SPECIFICATIONS:
RF Output Channels CATV 2-117, UHF 14-59
Output Level 45dBmv (min)
Range: 12Db (adj)
A/V carrier ratio -9 to -20dB
Visual Carrier Stability ±5KHz
Aural Carrier Offset ±4.5MHz
Aural Carrier Stability ±1 KHz
Spurious Outputs(dBc) -62 dBc
C/N Ratio (in-band) -62 dBc
Broadband Noise(dBc) -95
Visual
Min Video Input .5Vp-p
Frequency Response ±1dB (50Hz to 4.2 MHz)
Video S/N 60dB
Hum Ratio -60dB
Differential Gain 3%
Differential Phase 2 degree
Group Delay 75nsec
AURAL
Input Requirements 200MV (25khz dev)
Input Impedance 10Kohm
Frequency Response ±1 dB: 50Hz-15Khz:
Distortion (THD) 1%
Pre-Emphasis 75usec
Installation Instructions:
1. Slide the model HMMS unit into the HMR rack
2. Power up the modulator by connecting the 3 pin power plug from the HMPS to power
jack in the rear of the HMMS.
3. Allow the HMMS to warm up for at least 30 minutes
4. Connect a spectrum analyzer or field strength meter to the modulator RF OUT port
5. Turn the RF output adjustment on the front of the modulator to get desired output level
6. Turn the A/V adjustment to set the audio carrier 12 to 17 dB below the video carrier
7. Remove analyzer or field strength meter from the modulator RF OUT port
8. Connect baseband audio and video signals to the AUDIO IN and VIDEO IN ports
respectively
9. Connect modulator RF output to television/monitor. (Make sure to use the proper size
attenuator between the modulator and television so as not to overdrive the television
10. Turn on television and set to modulator channel
11. Turn the AUDIO adjustment on the front of the modulator to set the sound on the
television equal in volume to an off-air channel
12. Turn the VIDEO adjustment to set the video modulation.
Over-modulation causes buzzing sounds, overly bright scenes, and distorted
pictures.
Under-modulation results in pictures with dull white levels and dark colors.
13. Remove television/monitor and attenuator from the modulator RF OUT port.
14. Connect modulator RF OUT port to the RF input of the head-end system
IMPORTANT!!
WARNING: Holland Electronics does NOT represent this product to be
WATERPROOFED. To reduce risk of electrical shock, fire hazard, or damage to
the unit, do not expose to rain or moisture.
CAUTION: To prevent electric shock, do not use this plug with an extension
cord, receptacle or other outlet unless the blades can be fully inserted to prevent
blade exposure.
NOTE TO INSTALLER: This reminder calls the system installer’s attention to
Article 820-22 of the NEC that provides guidelines for proper grounding and, in
particular, specifies that the cable ground shall be connected to the grounding
system of the building, as close to the point of cable entry as practical.
WARNING:
TO PREVENT FIRE OR ELECTRICAL SHOCK, DO NOT EXPOSE THIS UNIT
TO RAIN OR MOISTURE
HOLLAND ELECTRONICS LLC
LIMITED WARRANTY
Holland ELECTRONICS LLC, warrants that the product enclosed with this Limited Warranty statement
will conform to the manufacturer’s specifications and be free of defects in the workmanship and material
for a period of five years (5) from the date of original purchase.
WARRANTY PROCEDURE:
If the product appears to be defective contact Holland Electronics LLC at (805) 339-9060. We will
analyze the problem and offer solutions to prevent removing the unit from service. If the unit is to be
returned for evaluation, you will be issued a Return Material Authorization (RMA) number.
Holland Electronics LLC will, at its option, repair or replace the defective unit, under warranty, without
charge for parts or labor. This repair will be subject to charges if signs of tampering or misuse are
detected. Incoming shipping costs will be the customer’s responsibility. Returns will not be accepted
without an RMA number.
The warranty and remedy provided above are exclusive and in lieu of all other express warranties and
unless stated herein, any statements or representations made by any other person or firm are void. The
duration of any implied warranties of merchantability or fitness for a particular purpose on this product
shall be limited to the duration of the express warranty set fourth above. Except as provided in this
written warranty, Holland Electronics LLC shall not be liable for any loss, inconvenience, or damage,
including direct, special, incidental, or consequential damages, resulting from the use or inability to use
this product, whether resulting from breach of warranty or any other legal theory.
Some states do not allow limitations on how long an implied warranty lasts and some states do not allow
the exclusion or limitation of incidental or consequential damages, so the above limitation and exclusion
may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to
state.
To arrange for Warranty Service: Call Holland Electronics LLC (805) 339-9060


Product specificaties

Merk: Holland Electronics
Categorie: Niet gecategoriseerd
Model: HMMS-25

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