RELEASED: 10/2/2006
Page 53
COMMUNICATI0NS
HSD SERIES OPERATION AND MAINTENANCE
This is an unpublished work protected by the United States copyright laws and is proprietary to EMCEE Communications.
Disclosure, copying, reproduction, merger, translation, modification, enhancement or use by anyone other than authorized
employees or licensees of EMCEE Communications without the prior written consent of EMCEE Communications is strictly
prohibited.
Copyright © 2006 EMCEE Communications. All rights reserved.
This copyright notice should not be construed as evidence of publication.
5.8 FREQUENCY PROGRAMMING:
The LO frequency of the Output Converter is calculated by subtracting 374 MHz from
the desired transmitter output frequency. The LO frequency (F
O
) is tunable in 1 MHz
steps. The LO circuit has an adjustment range of 194 MHz between 2125 MHz and
2321 MHz. Use the switches S3, S2, and S1 to set the 100 MHz, 10 MHz, and 1 MHz
steps respectively to transmit on the desired output frequency.
To adjust the transmitter output frequency, slide out the Up-Converter Drawer and
remove the lid by loosening the four fasteners. Remove the screws retaining the cover
to the Output Converter Module. Adjust the three 10 position rotary switches for the
desired frequency. Use the pictorial below as an aid for adjusting the frequency
programming switches.
The charts in Sections 5.7.1 and 5.7.2 contain the switch mapping for the FCC standard
transmit frequencies. For international (export) use outside of the United States, use
the published channel plan for the applicable country.
HSD Output Converter Module P/N 50523000
Switch S1
Tunes 1 MHz
F
O
Increment
Switch S2
Tunes 10 MHz
F
O
Increment
Switch S3
Tunes 100 MHz
F
O
Increment
