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Summary of Contents for Lumistar LS-25-D
- Page 1 LS-25-D and LS-25 - Version 2 Hardware User’s Manual Multi-band RF Downconverter and AM/FM Receiver Document: U025V203 Author: B. Graber Date: 12/18/2007 Release: Rev-2 Lumistar, Inc. 5870 El Camino Real Carlsbad, California 92008 (760) 431-2181 www.lumi-star.com...
- Page 2 Lumistar, Inc. has been advised of such possibilities, as a result of this document or the usage of items described within. The entire liability of Lumistar, Inc. shall be limited to the amount paid for this document and its contents.
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Page 3: Table Of Contents
UTLINE IAGRAMS ..................... 13 ARDWARE ONFIGURATION ....................16 HYSICAL NSTALLATION ......................17 NTERCONNECTION OPERATION OF THE LS-25-D AND LS-25 WITH THE LDPS SOFTWARE......21 LS-25-D/LS-25 H ..............22 ONFIGURING ARDWARE 4.1.1 Tuner Frequency...................... 23 4.1.2 IF Bandwidth ......................24 4.1.3 Video Filter Bandwidth ..................... - Page 4 LS-25-D / LS-25 Version 2 User’s Manual 5.2.16 AM Frequency Counter.................... 45 5.2.17 AM Output Gain Controls..................46 5.2.18 AGC Time Constant Selection................. 48 5.2.19 Accessory Control Selection..................48 5.2.20 Auto-store Status ..................... 49 5.2.21 Auxiliary Input Status ....................50 U025V203 Lumistar, Inc.
- Page 5 Table 5-3 Auto-store Parameters ....................49 List of Figures Figure 1-1 LS-25-D/LS-25 Model Number Construction Details ........... 8 Figure 1-2 Block Diagram of the LS-25-D/LS-25 Series Multi-band Receivers ......10 Figure 3-1 LS-25/LS-25-D PCI Outline Drawing ................. 14 Figure 3-2 LS-25/LS-25-D ISA Outline Drawing................15 Figure 3-3 Receiver Configuration Switches ................
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Page 6: Introduction
(IF) outputs as well as AM demodulation of the input signal. The product may be configured with up to 12 IF bandwidth filters. In addition to the functions of the LS-25-D, the LS-25 provides an additional FM demodulation stage and up to12 selectable video filters applied to the demodulated PCM signal. - Page 7 LS-25-D / LS-25 Version 2 User’s Manual U025V203 Lumistar, Inc. Page 7 10/24/08...
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Page 8: Figure 1-1 Ls-25-D/Ls-25 Model Number Construction Details
LS-25-D / LS-25 Version 2 User’s Manual LS-25- PCI Form Factor RF Band Installed (See Table Below) = ISA Form Factor RF Band Installed (See Table Below) = D = Downconverter only RF Band Installed 4 IF & 4 Video Filters (See Table Below) = 12 IF &... -
Page 9: Table 1-1 Specifications For The Ls-25-D/Ls-25 Series Multi-Band Receivers
Mixed Discrete and Coax Connections (J5) Environmental Temperature, Operational 0° to 70° C (Commercial) Temperature, Storage -20° to 70° C Humidity, non-condensing <40° C 0-90%, >40° C 0-75% Table 1-1 Specifications for the LS-25-D/LS-25 Series Multi-band Receivers U025V203 Lumistar, Inc. Page 9 10/24/08... -
Page 10: Figure 1-2 Block Diagram Of The Ls-25-D/Ls-25 Series Multi-Band Receivers
LS-25-D / LS-25 Version 2 User’s Manual Figure 1-2 Block Diagram of the LS-25-D/LS-25 Series Multi-band Receivers U025V203 Lumistar, Inc. Page 10 10/24/08... -
Page 11: Theory Of Operation
The difference component LO application is referred to a “low-side” conversion. The sum component application is referred to as “high-side” conversion. Both methods are equally valid and each has its own benefits. The LS-25-D and LS-25 designs utilize low-side conversion to prevent spectral inversions. -
Page 12: Local Oscillator
LS-25-D / LS-25 Version 2 User’s Manual 2.4 2 Local Oscillator The second LO is injected into the mixer of the 2 Downconversion stage to provide the second IF frequency of 70MHz. Like the first conversion stage, the second LO utilizes low-side injection for this conversion. -
Page 13: Installation And Configuration
LS-25-D / LS-25 Version 2 User’s Manual 3 Installation and Configuration Chapter 3 provides installation and configuration information. This chapter will locate serial numbers and product configuration information, familiarize the user with the layout of the board, and provide information on the proper installation and interconnection of the hardware. -
Page 14: Figure 3-1 Ls-25/Ls-25-D Pci Outline Drawing
LS-25-D / LS-25 Version 2 User’s Manual Figure 3-1 LS-25/LS-25-D PCI Outline Drawing U025V203 Lumistar, Inc. Page 14 10/24/08... -
Page 15: Figure 3-2 Ls-25/Ls-25-D Isa Outline Drawing
LS-25-D / LS-25 Version 2 User’s Manual Figure 3-2 LS-25/LS-25-D ISA Outline Drawing U025V203 Lumistar, Inc. Page 15 10/24/08... -
Page 16: Physical Installation
LS-25-D / LS-25 Version 2 User’s Manual Figure 3-3 Receiver Configuration Switches 3.3 Physical Installation To install the receiver in the target computer system, the following procedure should be followed: 1. Perform a normal system shutdown of the PC system and remove the primary power plug. -
Page 17: Interconnection
J2 and J5 connectors. Figure 3-5 on page 19 provides interface pin- outs and mating connector information for the J3 connector. The LS-25 and LS-25-D products are shipped with a mating pigtail cable to interface with the J5 connector. Figure 3-6 on page 20 illustrates these cable configurations. -
Page 18: Figure 3-4 J2/J5 Pin-Out And Interface Connections
LS-25-D / LS-25 Version 2 User’s Manual Figure 3-4 J2/J5 Pin-out and Interface Connections U025V203 Lumistar, Inc. Page 18 10/24/08... -
Page 19: Figure 3-5 J3 Pin-Out And Interface Connections
LS-25-D / LS-25 Version 2 User’s Manual Figure 3-5 J3 Pin-out and Interface Connections U025V203 Lumistar, Inc. Page 19 10/24/08... -
Page 20: Figure 3-6 Ls-25 / Ls-25-D Pigtail Connectors
LS-25-D / LS-25 Version 2 User’s Manual Figure 3-6 LS-25 / LS-25-D Pigtail connectors U025V203 Lumistar, Inc. Page 20 10/24/08... -
Page 21: Operation Of The Ls-25-D And Ls-25 With The Ldps Software
4. To setup and configure the LS-25-D and LS-25 cards, follow the procedures outlined in paragraphs 4.1. Located in the LDPS directory, the standalone application, LS25V2_8x performs the same functions as described in this section. -
Page 22: Configuring The Ls-25-D/Ls-25 Hardware
LS-25-D / LS-25 Version 2 User’s Manual Figure 4-2 LDPS Server Application Windows 4.1 Configuring the LS-25-D/LS-25 Hardware From the “Ls25V2_8x (Receiver)” display shown below upper left in Figure 4-3, click “Setup” and then “Stream 1” (Setup →Stream 1). Figure 4-3 LDPS Configuration Menus/Controls for the LS-... -
Page 23: Tuner Frequency
Configuration Menu 4.1.1 Tuner Frequency The Version 2 Lumistar LS-25-D Multi-band RF Downconverter and the LS-25 Multi-band FM Receiver concurrently support AM & FM demodulation in three the following five possible frequency bands. Note that up to three (3) of these bands may be specified at the time of order. -
Page 24: If Bandwidth
LS-25-D / LS-25 Version 2 User’s Manual Figure 4-5 Tuning Frequency Display 4.1.2 IF Bandwidth The Version 2 Lumistar LS-25-D Multi-band RF Downconverter and the LS-25 Multi-band FM Receiver are factory configured to support up to twelve (12) separate 2 IF bandwidths. Standard bandwidths include: 500kHz, 1MHz, 1.5MHz, 2.5MHz, 3.5MHz, 4MHz, 6MHz, 8MHz, 10MHz,... -
Page 25: Video Filter Bandwidth
LS-25-D / LS-25 Version 2 User’s Manual 4.1.3 Video Filter Bandwidth The Version 2 Lumistar LS-25-D Multi-band RF Downconverter and the LS-25 Multi-band FM Receiver are factory configured to support up to twelve (12) separate Video Filter bandwidths. Standard bandwidths include: 250kHz, 500kHz, 750kHz, 1.25MHz, 1.75MHz, 2MHz, 3MHz, 4MHz, 5MHz, 6MHz, 8MHz, and 10MHz. -
Page 26: Output Gain Controls
LS-25-D / LS-25 Version 2 User’s Manual The “External Demod Source” sub-mode enables the LS-25 FM Discriminator and Video Filter to be driven by an external input source. See paragraph 5.2.10 on page 41 for more details. The selection of this sub-mode is indicated in the display as shown in Figure 4-9 below left (red oval). -
Page 27: Am Controls
LS-25-D / LS-25 Version 2 User’s Manual Figure 4-10 Output Gain Controls & Resulting Display 4.1.6 AM Controls The LS-25V2 AM Controls has two sub-modes: “AM Low Pass Filter (Hz)”, and “View AM Data” as shown in Figure 4-11 below left. When the “View AM Data” sub-mode is selected, two additional data displays will appear on the display as shown below right (red oval). -
Page 28: Rssi/Agc Controls
LS-25-D / LS-25 Version 2 User’s Manual The “AM Low Pass Filter (Hz)” sub-mode allows the user to select one of four low-pass filters on the AM output including; 50, 500, 5000, or 50,000 Hz. Note, the 50 KHz selection is the same as low-pass filter bypass. -
Page 29: Deviation Display Modes
LS-25-D / LS-25 Version 2 User’s Manual 4.1.8 Deviation Display Modes The LS-25V2 Deviation Display Mode Control has three sub-modes: “IF BW Percentage”, “Approx FM Deviation”, and “None” as shown in Figure 4-13 below left. The “None” mode display is shown in Figure 4-13 below right. -
Page 30: Programming
LS-25-D / LS-25 Version 2 User’s Manual 5 Programming This chapter provides receiver software interface and setup information. Depending on the form factor ordered, the receivers provide command and status interfaces through either a 32-bit Peripheral Component Interface bus (PCI version 2.2) or an 8-bit Industry Standard Architecture bus (ISA). -
Page 31: Isa Bus Interfaces
LS-25-D / LS-25 Version 2 User’s Manual 4.) If the carry flag was clear, read the sub-identifier. Set the registers as follows: AX = 0xB10A BX = handle SI = 0x2C 5.) Issue another software interrupt (0x1A). The interrupt returns a value in the ECX register. -
Page 32: Table 5-1 Receiver Command And Status Register Table
LS-25-D / LS-25 Version 2 User’s Manual Command Registers Mnemonic Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 TLM2 FM Demod FM Demod CMD0 Output Data Input Accessory Controls Linear Out AGC Time Constant Select... -
Page 33: General Communications Interaction
Hex Return String: ASCII Return String: LS-25 0x4C, 0x53, 0x32, 0x35, 0x56, 0x32, 0x00 “L”, “S”, “2”, “5”, “V”, “2”, “NULL” LS-25-D 0x4C, 0x53, 0x32, 0x31, 0x56, 0x32, 0x00 “L”, “S”, “2”, “1”, “V”, “2”, “NULL” U025V203 Lumistar, Inc. Page 33... -
Page 34: Led Control
LS-25-D / LS-25 Version 2 User’s Manual This receiver presents these identification strings in a circular fashion terminating in a NULL character (0x00). Once the NULL character is received, subsequent reads from this register will recycle through the character string. - Page 35 LS-25-D / LS-25 Version 2 User’s Manual One application for these LEDs is as a means for the device driver or software application to provide receiver identification when multiple instances of a physical device are present in a system. U025V203 Lumistar, Inc.
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Page 36: Configuration Data
LS-25-D / LS-25 Version 2 User’s Manual 5.2.4 Configuration Data The receiver provides the application software with hardware configuration information detailing available filters and hardware status. This data is held internally in the receiver in a configuration PROM. The contents of this configuration PROM are contained in Table 5-2 below. -
Page 37: Figure 5-4 Configuration Prom Control And Status
LS-25-D / LS-25 Version 2 User’s Manual Figure 5-4 Configuration PROM Control and Status To access the configuration data, the following steps should be performed: 1.) Ensure that the BUSY bit is not set. (Status Register 3, bit 7) 2.) Place the receiver in PROM Read mode by setting bits 6 through 4 of Command Register 3 as follows: 010 3.) Poll the BUSY bit until it returns low. -
Page 38: Receiver Rf Tuning
LS-25-D / LS-25 Version 2 User’s Manual 5.2.5 Receiver RF Tuning The tuning of the receiver is a two-stage process. First, the proper receiver RF input must be selected followed by the RF synthesizer tuning process. Registers that are required for tuning are depicted in Figure 5-5 below. -
Page 39: If Filter Selection
LS-25-D / LS-25 Version 2 User’s Manual 4.) Perform the following calculation: (F modulo (256MHz))/1MHz. Truncate the value to an integer and write the resulting value to Command Register 5. 5.) Perform the following calculation: (F modulo (1MHz))/10kHz. Truncate the value to an integer and write the resulting value to Command Register 4 6.) Place the receiver in RF Tune mode by setting bits 6 through 4 of Command Register... -
Page 40: Received Signal Strength Indication (Rssi)
1.) Ensure that the BUSY bit is not set. (Status Register 3, bit 7) 2.) Enter the desired Video Filter number in bits 7 through 4 of Command Register 2. For the LS-25-D receiver, the video filter selection control bits are non-functional. 5.2.8 Received Signal Strength Indication (RSSI) Status Register 4 provides an 8-bit indication of the RF signal strength being applied at the RF Input (J2). -
Page 41: Fm Demodulation Input Selection (Ls-25 Only)
For the LS-25-D receiver, this register is non-functional. 5.2.10 FM Demodulation Input Selection (LS-25 ONLY) The LS-25 receiver design allows the user to select the source to the dual FM discriminator stage. -
Page 42: Fm Demodulation Data Polarity Selection (Ls-25 Only)
LS-25-D / LS-25 Version 2 User’s Manual 5.2.11 FM Demodulation Data Polarity Selection (LS-25 ONLY) The LS-25 receiver allows the application software to select the polarity of the PCM data output. This function may be necessary for spectrally inverted RF input sources. Figure 5-9 below contains the selection register for the PCM output data polarity. -
Page 43: Tlm Output Gain Controls (Ls-25 Only)
LS-25-D / LS-25 Version 2 User’s Manual For the LS-25-D, this control is non-functional. 5.2.13 TLM Output Gain Controls (LS-25 ONLY) The LS-25 receiver allows the application software to manually control the output voltage of the telemetry (TLM1 and TLM2) signal produced by the receiver. The receiver’s TLM outputs are factory calibrated to produce a 4Vp-p video filter output based on 100% FM deviation for each filter selection. -
Page 44: Am Index/Depth Status
LS-25-D / LS-25 Version 2 User’s Manual For the LS-25-D, this TLM Gain Control is non-functional. 5.2.14 AM Index/Depth Status Status Register 2 contains the AM Index (or AM Depth) that has been detected in the post- processing of the AM demodulation. In AM modulation, 100% modulation is defined as the level where the negative peaks of the modulating signal reduce the transmitted signal output to zero. -
Page 45: Am Frequency Counter
LS-25-D / LS-25 Version 2 User’s Manual 2.) Enter the desired logic state in bits 3 and 2 of Command Register 3. 3.) Loop until the BUSY bit drops low. At this point, the cutoff frequency data will be available in Status Register 6 and Status Register 7. -
Page 46: Am Output Gain Controls
LS-25-D / LS-25 Version 2 User’s Manual Access to the AM Frequency Counter should follow the process below: 1.) Ensure that the BUSY bit is not set. (Status Register 3, bit 7) 2.) The application software should monitor the AM Frequency Update flag and the AM Counter Overflow flag in host Status Register 3. -
Page 47: Figure 5-14 Am Output Gain Control
LS-25-D / LS-25 Version 2 User’s Manual To individually step the AM Gain Digipot, follow this procedure: 1.) Ensure that the BUSY bit is not set. (Status Register 3, bit 7) 2.) Write a 0x02 to Command Register 6 3.) Set Command Register 7 bits 1 and 0 to the achieve the desired step direction 4.) Set Command Register 7 bit 7 to 1. -
Page 48: Agc Time Constant Selection
LS-25-D / LS-25 Version 2 User’s Manual 5.2.18 AGC Time Constant Selection The first two bits of Command Register 0 allow the application software to select an AGC Time Constant, which is applied to the RSSI Output found on the J5 connector. The time constants are related to the RSSI linearization processing that is being conducted via the DSP processor. -
Page 49: Auto-Store Status
LS-25-D / LS-25 Version 2 User’s Manual Figure 5-16 Accessory Output Selection Selection of the Accessory Output Controls should follow the process below: 1.) Ensure that the BUSY bit is not set. (STAT3, bit 7) 2.) Enter the desired logic state in bits 3 and 4 of Command Register 0. -
Page 50: Auxiliary Input Status
LS-25-D / LS-25 Version 2 User’s Manual Some customers may have security concerns about data being stored by the receiver. To address this issue, a flag in Status Register 3 indicates the state of this switch. Figure 5-17 below illustrates this bit.
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