QEI 7RSP1 User manual

UG-1010
INSTALLATION/OPERATION
MANUAL MODEL 7RSP1
Radio Synthesizer Panel Manual No. 906
November 2018

UG-1010 Radio Synthesizer Panel
Copyright © 2016 by QEI
UG-1010 Radio Synthesizer Panel
ALL RIGHTS RESERVED
NOTICE
The information in this document has been carefully checked and is believed to be accurate. However,
no responsibility is assumed or implied for inaccuracies. Furthermore, QEI reserves the right to make
changes to any products herein described to improve reliability, function or design. QEI does not assume
liability arising to the application or use of any product or circuit described herein; neither does it convey
any license under its patent rights nor the rights of others.
This manual and all data contained constitutes proprietary information of QEI and shall not be
reproduced, copied or disclosed to others, or used as the basis for manufacture without written consent of
QEI
45 Fadem Road
Springfield, NJ 07081
Phone: [phone]
Fax: [phone]
Web Site: www.qeiinc.com

UG-1010 Radio Synthesizer Panel
Copyright © 2016 QEI Contents  3
Revisions
Revision
Description
Date
A
Release to Production
February 1990
B
Formatting Update
June 2013
C
Formatting Update
February 2016
D
Updated QEI Address
November 2018

UG-1010 Radio Synthesizer Panel
Copyright © 2016 QEI Contents  i
Contents
1 Introduction .................................................................................1
1.1 Scope of Manual..................................................................1
1.2 Description .............................................................................1
1.3 Purpose...............................................................................1
1.4 Specifications ......................................................................1
2 Installation ...................................................................................4
2.1 Unpacking and Inspection....................................................4
2.1.1 Damage Claims .......................................................4
2.1.2 Missing Items ..........................................................4
2.2 Test Equipment and Tools ........................................................4
2.3 Equipment Location.............................................................5
2.3.1 Environment..........................................................5
2.4 Interconnecting Wiring.........................................................5
2.4.1 External Wiring......................................................5
2.4.2 RadioControl Lines...............................................5
2.4.3 Terminal block Connections................................10
3Operating Instructions...........................................................10
3.1 Operation...........................................................................10

UG-1010 Radio Synthesizer Panel
Copyright © 2016 QEI Scope of Manual  1
1 Introduction
1.1 Scope of Manual
This manual provides Installation and Operating information on the model 7RSP1Radio
Synthesizer Panel which is a component subassembly of the Model RCU-5500 Radio
Communication Unit. The RCU-5500 operates as part of a Load Management Control System
under the control of QUICS IV Supervisory Control and Data Acquisition (SCADA) System
manufactured by QEI, 45 Fadem Road, Springfield, New Jersey 07081.
1.2 Description
The 7RSP1 Radio Synthesizer Panel is constructed on a large, printed circuit board measuring
10.5 inches by 9.5 inches. The panel is designed to be mounted inside of various cabinets.
1.3 Purpose
The 7RSP1 Radio Synthesizer Panel is controlled by an external Central Processing Panel which
has received downloaded information from a QEI Master Station. The 7RSP1 Radio Synthesizer
Panel performs a number of functions; it sets a transmission protocol keys the radio transmitter and
modulates the transmitter with data it received from the Central Processing Panel. The 7RSP1
Radio Synthesizer Panel contains a tone generator and performs control functions as well. When
the Request to Send (RTS) signal from the ASCII/external modem port on the Central Processing
Panel is set, data is transmitted to the 7RSP1 Radio Synthesizer Panel. The data is processed and
converted to the protocol used by the radio receiver. Once the radio has been keyed, the data is
then sent to the radio transmitter in the form of Frequency Shift Keying (FSK). An
acknowledgement signal ACK is sent by the 7RSP1 Radio Synthesizer Panel back to the Central
Processing Panel upon receipt of control information. This resets the Central Processing Panel so
that further information can be sent. Outputs on the 7RSP1 Radio Synthesizer Panel can be set for
different impedances and output levels.
1.4 Specifications
Specifications for the 7RSP1 Radio Synthesizer Panel are listed in
TABLE 1-1. 7RSP1 RADIO SYNTHESIZER PANEL SPECIFICATIONS
I nput Power: +12V dc, +5%
-12V dc, +5%
Supply Current: Less than 0.5 amp from +12 Volt supply.
Less than 0.1 amp from -12 Volt supply.
Temperature Range: -30 to +70 degrees c.
Port
to RTU: StandardRS-232 levels.
Three signal lines: RTSfrom RTU.
Transmit D ata from RTU.
Receive Data to RTU.
9600
baud, start-stop, one start bit.
8data bits, one stop bit, no
parity.
OutputTone Frequency: Audio binary or trinaryFSK
signal with any frequency
between 300 and 3300 Hz.

Radio Synthesizer Panel UG-1010
2  Specifications Copyright © 2016 QEI
Modulation willbe"continuous
phase”.
Tone Frequency Accuracy: 1Hz to 0.1%, whichever is greater.
Amplitude Response: Dip switch settable for flat response
or 6 dB/octave de-emphasis.
Tone Harmonics: Greater than 45 dB below
fundamental
FSK Bit Rate: Programmable from 10 to 300 bps
With accuracy of0.1% or0.1bps,
whichever is greater.
Tone Outputs: There are two isolated andfloating
transformer outputs either for driving
a balanced phone line ora
transmitter microphone input. When
driving a micro- phone input, the
transformer isolation prevents
ground loop noise.
Tone Output Level: Settable in steps by switches and
con tinuously adjustable bya
potentiometer. Maximum output level
is: +6dBm into one600 ohmloador0
dBm into two 600 ohmloads (one on
each of the transfor mer secondaries).
Also, maximum outputlevel of0.2V
into one or two transmitter carbon mike
(or Motorola transistorized mike) inputs,
or ceramic mikeinputs.
Output Impedance: 600 ohms to drive one or two 600
ohm lines (one on each ofthe
transformer secondaries). Also, 100
ohmsto drive oneortwo transmitter
microphone in- puts.
Control Outputs:
Non-Isolated: Two free NPN Darlington transistor col-
lectors (Q1 and Q2)that can withstand
+5Vdcwhen off or sink 300 rnA when
on. These are controlled byacommand
byte from the RTU. One application for
these outputs is to keyone or two RF
transmitters.

UG-1010 Radio Synthesizer Panel
Copyright © 2016 QEI Specifications  3
Isolated:
Isolated keying outputs are also
provid edby two relays K1,andK2. The
relays are operated by the collectors of
trans istors Q1andQ2
Baseband Output: This output may be used to binary
frequency shift and RF transmitter if pro-
vision is made in the radio to directly FM
the crystal oscillator. Output is
a djustable over the range of -8Vto +8V.
The output offset can be adjusted
over the same range.
Baseband Bit Rate: Programmable from 10to 300 bps
with accuracy of 0.1% or 0.1 bps,
whichever is greater.

Radio Synthesizer Panel UG-1010
4  Unpacking and Inspection Copyright © 2016 QEI
2 Installation
2.1 Unpacking and Inspection
Caution
BE CAREFUL,DURING UNPACKING, TO AVOID DAMAGE TO THE EQUIPMENT.
2.1.1 Damage Claims
The 7RSP1 Radio Synthesizer Panel has been carefully packed to provide maximum
protection during handling and transportation. Immediately upon receipt, check the
equipment for obvious signs ofdamage. Even if the equipment will not be installed
immediately, itis advisable to u npack it sufficiently to expose any hidden damage. If
external or internal damage exists, make an immediate report to the shipping carrier and
notify QEI .
2.1.2 Missing Items
Each 7RSP1Radio Synthesizer Panel includes a partslistat theend of the manual.
Check all hardware against the parts listand immediately report any shortage to QEI
Compare instruction manuals and drawingsto the Documentation List and/or
packing list and report any shortage to QEI.
2.2 Test Equipment and Tools
Table 2-1 lists the test equipment and tools which are recommended for usewhen installing
or maintaining the 7RSP1 Radio Synthesizer Panel.
TABLE 2-1. TEST EQUIPMENT AND TOOLS
EQUIPMENT PURPOSE
Oscilloscope, Dual Trace To check and adjust signal durations
And timing in high- speed data processing
circuts.
ACVoltmeter To
measureaudio frequencyvoltages.
Digital Multi-meter To measure power supply levels and
make other dc, low-frequency, and
resistance checks.
ElectronicToolbox (Standard) To maintain system

UG-1010 Radio Synthesizer Panel
Copyright © 2016 QEI Equipment Location  5
2.3 Equipment Location
2.3.1 Environment
The 7RSP1 RadioSynthesizerPanel is designedto operate over an environmental
temperature range of-30°C to 70°C, and thestorage temperature limits are much wider
(equipment may besafely stored from-55°C to +85°C).
2.4 Interconnecting Wiring
The 7RSP1 Radio Synthesizer Panel which is normally part of the Model RCU-5500
Radio Communication Unit is wired and connected at the factory. Connectors Jl
and J2 are plug in connectors to other electronic subassemblies. When replacing
a 7RSP1 Radio Synthesizer Panel, these connectors are simply inserted into the
Panel connectors.
2.4.1 External Wiring
The following paragraphs provide information on connecting TerminalBlockTBl.
2.4.2 RadioControl Lines
Normally, all radio circuit control lines have been factory set to operate with a
specific type of radio which requires a specific tone level and impedance. In the
event it is required to change the impedance setting or output levels, proceed as
follows:
Terminal board TB1 on the 7RSP1 Radio Synthesizer Panel contains the
termination point for all external radio connections. Refer to the following
paragraphs for information regarding these connections. Refer to the
Interconnection diagrams supplied with your system.
When using the keying relays in the 7RSP1 Radio Synthesizer Panel, the keying
voltage must be between 0 and +50 V de, load must be non-reactive, and current
must be less than 300 mA. The transmitters may also be keyed directly by
transistor outputs, without the use of the isolation relays.
There are two independent, isolated and floating tone outputs. Each has a low
and a high terminal. Use tone output #1 to drive a single transmitter, or to drive
the first of two transmitters. Use tone output #2 for the second trans-mitter. If
these outputs drive a balanced 600 ohm line, use standard telephone grade,
twisted pair wire to connect the output high and the output low lines to the
transmitter line input. Polarity is not important for a balanced 600 ohm line.
If these outputs drive the transmitter microphone input, then use single conductor
shielded cable Connect the shield to output low and center conductor to output
high. Only one end of the shield (low line) must be grounded, and that must be
at the transmitter end of the line.

Radio Synthesizer Panel UG-1010
6  Interconnecting Wiring Copyright © 2016 QEI
Synthesizer dip switchesS1-1, S1-2 and S2-1 throughS2-8 mustbe set for compatibility
with transmitter impedance and level. Examples of switch settings are shown in Table 2-2.
NOTE:
Treat S2-5 through S2-8 exactly as S2-1 through S2-4. The only difference is that
they are for the 2nd tone output.
TABLE 2-2. SWITCH SETTINGS
FUNCTION
SWITCHE
S
Drive
a 600 ohm line with
level
between -10 &0dBm
S1-1
S1-2
S2-1
S2-2
S2-3
S2-4
ON
OFF
ON
OFF
OFF
OFF
Drive
a 600ohmline with
level between
-30& 10 dBm
OFF
ON
ON
OFF
OFF
OFF
Drive transmitter carbon
or
transistor mike input
(up
to 0.2V)
ON
OFF
OFF
ON
OFF
ON
Drive reluctance or ceramic mike
input (up to0.02 V)
ON
OFF
OFF
OFF
ON
ON
Refer to Table 2-3 for actual switch settings and Figure 2-1 for resistor con
figuration in unit.
TABLE 2-3. IMPEDANCE TABLE
SWITCHES IMPEDANCE
S2-1 DirectOutputXMT 1
S2-2
499ohms - series 1
82-3
4990ohms - series 1
S2-4
100ohms - parallel 1
S2-5 Direct Output XMT 2
S2-6
499 ohms - series 2
S2-7
4990ohms - series 2
S2-8 100 ohms –parallel 2

UG-1010 Radio Synthesizer Panel
Copyright © 2016 QEI Interconnecting Wiring  7
Figure 2-1. Dip Switch S2 Settings

Radio Synthesizer Panel UG-1010
8  Interconnecting Wiring Copyright © 2016 QEI
Refer to Table 2-4 for actual switch settings used to attenuate or boost the out-put.
Figure 2-2illustrates the basic circuit configuration.
TABLE 2-4. OUTPUT ATTENTUATION TABLE
SWITCH STATE
OFF ON FUNCTION
S1-1 S1-2 Attenuate Output 14db
S1-2 S1-1 Boost Output ldB
S1-1 Attenuate Output 4db
S1-4 S1-3 Select De-emphasis
S1-3 S1-4 Select Flat Response

UG-1010 Radio Synthesizer Panel
Copyright © 2016 QEI Interconnecting Wiring  9
Figure 2-2. Output Attenuation Circuit Switches
Thefrequencyresponse dipswitches will need tobesetonlyif a different radio isused. For most
applications, the tonewillpassthroughthe RF transmitter's modulation amplifierwhichwill apply
pre-emphasis to the signal. Therefore, the synthesizer's output responseshouldhave de-
emphasis. Unlessyouaresure that the transmitter does not pre-emphasizethesignal, switch Sl-
3 on and Sl-4 off. Only switch Sl-3 off and Sl-4 onif you are sure that the transmitterdoes not pre-
emphasize thesignal.
Some systems require thattheRFtransmitter crystaloscillator bedirectly fre quency modulated by
data, rather than use tone modulation. Since there isno standard method of connection or
modulation level adjustment as there iswith audiotone,each installation mustbehandledas a
special application.
QEI will issue a procedurefor each make/model of RFtransmitter thatitgains experience with.
In general, it can be said that the 7RSP1 Radio SynthesizerPanel has a direct FM signal output.
Thelevel of this signal can beadjusted from 0 to16 from 0to 16 V peak-to-peak and dc offset of
this signal is adjustable. The output is low impedance and can drive the crystal reactance modulator
of one transmitter or of two transmitters in parallel.
CAUTION
OBSERVE ALL SAFETY RULES WHEN
WORKING WITH AC POWER LINES
Power
Power for the 7RSP1 Radio Synthesizer Panel is applied to connector J1, pins1 and 2. Pin 1 requires+12
V dc, pin 2 is common.

Radio Synthesizer Panel UG-1010
10  Operation Copyright © 2016 QEI
2.4.3 Terminal block Connections
Table 2-5 identifies the connections to Terminal Block TB1.
TABLE 2-5. TBl TERMINAL BLOCK TERMINAL IDENTIFICATION
Terminal Type of Connection
1 ReceiveData to RTU
2 Transmit Data fromRTU
3 RTS from RTU
4 Ground from RTU
5 CTS to RTU
6 HIToneOut toTransmitter #1
7 LO
8 HITone Out to Transmitter #2
9 LO
10 Direct FM output
11 Aux Key 2
12 Aux Key 1
3 Operating Instructions
3.1 Operation
The 7RSP1 Radio Synthesizer Panel does not contain any operating controls
which require a user's interface. The panel, when installed in a system, operates
unattended. Turn on and turn off procedures usually involve controls associated
with a power supply which is part of the system.