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RCS-200
Remote Channel Selector
Instruction Manual
Introduction
The RCS-200 is a remote channel selector option for use with the
Pyramid SVR-200 vehicular repeater. When installed in the mobile
radio of a SVR-200 application, the RCS-200 will allow the handheld
operator to remotely change the mobile radio channel via a DTMF
keypad. The RCS-200 contains a microprocessor controlled voice
synthesizer and will acknowledge the channel change request by
announcing the selected channel over the SVR-200 portable link in a
female voice. This provides voice acknowledgment for the handheld
operator initiating the channel change request, as well as notifying other
handheld operators on the link that the mobile channel has changed. Additionally, the voice acknowledgment is transmitted via the mobile radio to alert the dispatcher that the mobile user has left the channel.
Channel selection is accomplished by sending the DTMF "*" followed by a two digit channel request. Additionally, the RCS-200 can be pre-programmed with one revert channel that is accessed by sending
a double "*" sequence; the revert channel may be any channel number
up to 99.
The RCS-200 will work with a wide variety of mobile radios and channel selection schemes including quadrature rotary switches, channel up selectors, and serial I/O interfaces. There is no programming or dip switch settings required for RCS-200 operation. The version of RCS-200 firmware will determine the channel selection method, channel changing speed, revert channel and custom options such as group change. Please consult with the factory for specific applications and installation notes.
Specifications:
| Signaling format: |
Decodes all standard DTMF characters, .5 to12 DPS |
| Wrong/Interdigit time-out: |
2 seconds |
| Input level: |
5mVRMS to 2VRMS |
| Input impedance: |
>47Kohms AC coupled |
| Twist: |
0-10db |
| S/N Ratio: |
12db |
| Channel capability: |
1-99 plus pre-programmed revert channel |
| Channel select speed: |
Up to 200 channels/sec, limited only by mobile radio |
| Channel identification: |
Synthesized female voice annunciator |
| Channel selection method: |
Quadrature rotary switch, channel up or serial I/O |
| Operating voltage: |
7-24 VDC |
| Current consumption: |
20mA |
| Size: |
1.75" x 2.25" x .3" |
Specifications subject to change without notice.
Installation
| Red |
Switched B+. Connect to the radio's switched 12VDC supply or any regulated supply greater than 7VDC that goes off with the radio power switch.
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| Black |
Ground. Connect tot he radio's chassis or ground plane.
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| White |
Channel select I out, active low open collector. The function of this line will vary with the channel selector application:
Quadrature rotary switch: This is the in-phase channel up selector and will switch to ground and go positive 900 before the Q output select line.
Channel up select: This line is pulsed low for 50mSec and does not require connection of the Q output line for proper operation.
Serial I/O: Communications with the host processor takes place on this line only, and does not require connection of the Q output line for proper operations.
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| Blue |
Channel select Q output, active low open collector. Used only for quadrature rotary switch applications, this line lags behind the I output by 900. If the radio improperly counts down instead of up, reverse the I and Q outputs. This line is not connected for channel up select or serial I/O channel schemes.
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| Orange |
Home channel select, active low open collector. In order for the RCS-200 to properly select the requested channel, it first asserts this line to force the radio to channel one, then counts up via the I and Q outputs as described above. Depending upon the particular mobile application, this line would be connected to the active low front panel switch that causes the mobile radio to revert to channel one. The mobile radio must be properly programmed to execute this sequence. Optionally, this line can be used to force the radio into an off-hook sequence that would cause the mobile to revert to channel one. In serial I/O applications, this line may not be necessary. Consult with the factory for specific applications.
|
| Green |
PTT output, active low open collector. Connect to the SVR-200 mobile PTT output. This line is monitored by the SVR-200 for local PTT repeat.
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| Yellow |
Audio in. Connect to the transmit audio output from the SVR-200 or to the output of the mobile's Mic amp. Signaling tones received by the SVR-200 from the handheld will be present during handheld to base transmissions.
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| Brown |
Voice output. Connect to the brown wire from the SVR-200 (local Mic repeat). |
Alignment
To set the voice deviation level, short the PCB test pads adjacent to U2 (refer to parts locator
diagram). The RCS-200 will assert the PTT line and count from one to ten. Adjust RV1 for
proper deviation level (low distortion of the voice).
| Jumpers: |
| J1 |
Rx sensitivity |
In: 20db gain |
Out: 47db gain |
| J2 |
Output Impedance |
In: 600 Ohms |
Out: 2.2K Ohms |
| J3 |
Tx Sensitivity |
In: 200m VPP Max |
Out: 3VPP Max |
| J4 |
Audio Loop Back |
In: Input = Output |
Out: Input & Output are independent |
Click Here to enlarge
PARTS LOCATOR
Parts List
| Reference |
Description |
Part # |
| C3,C4,C5,C6 |
22 pfd ceramic chip capacitor |
1010-53-6220 |
| C1,C2,C7,C8,C11,C14 |
.1ufd ceramic chip capacitor |
1010-53-6104 |
| C9,C12 |
1000pfd ceramic chip capacitor |
1010-53-6102 |
| C10,C13 |
2200 pfd ceramic chip capacitor |
1010-53-6222 |
| C15,C16,C17,C18,C19 |
2.2ufd Tantalum SMD capacitor |
1610-34-6225 |
| Q1,Q2 |
2N4401 sot23 transistor |
3010-01-4401 |
| RV1 |
10K SMD pot |
2030-07-8103 |
| R10,R11 |
1.0M .1 Watt chip resistor |
2010-03-5105 |
| R12 |
18K .1 Watt chip resistor |
2010-03-5183 |
| R15,R20,R24 |
100K .1 Watt chip resistor |
2010-03-5104 |
| R6,R13,R14,R18,R19 |
33K .1 Watt chip resistor |
2010-03-5333 |
| R4,R7,R21,R22 |
2.2K .1 Watt chip resistor |
2010-03-5222 |
| R16,R17 |
47K .1 Watt chip resistor |
2010-03-5473 |
| R1,R2,R8,R23 |
10K .1 Watt chip resistor |
2010-03-5103 |
| R3 |
220K .1 Watt chip resistor |
2010-03-5224 |
| R5 |
820 Ohm .1 Watt chip resistor |
2010-03-5821 |
| R9 |
330K .1 Watt chip resistor |
2010-03-5334 |
| U1 |
TSP53C32 voice synthesizer |
3700-06-5332 |
| U2 |
AT89C2051 microprocessor |
3610-01-8951 |
| U3 |
M-8870-01SM DTMF decoder |
3410-01-8870 |
| U4 |
DS1833-10 Reset controller |
3400-07-1833 |
| U5 |
4066 Quad analog switch |
3400-01-4066 |
| U6 |
MC3403 Quad op amp |
3400-01-3403 |
| U7 |
LM78L05UA 5V 100mA regulator |
3010-06-7805 |
| X1 |
3.58MHz Xtal CSM-7 case |
6010-01-3579 |
| X2 |
9.6MHz Xtal AC-301 case |
6000-03-9600 |
Warranty Statement
This warranty covers all defects in materials and workmanship for a period of 1 year, measured from the date of purchase by the first end user, that result in performance outside of specification, with exception of the following:
- Damage, deterioration or failure resulting from accident, misuse, neglect, modification or repair (except by an authorized service center), improper installation, water damage, theft or civil disturbance, or manner of use which is inconsistent with the instruction manual.
- Damage or loss occurring during shipment (claims must be presented to the carrier) or shipping charges to return defective units for repair.
- Any unit which is not new when sold to the first end user or unit whose serial number has been altered or removed.
- Any labor charges incurred in removal/installation of defective or repaired units shall not be covered by this warranty.
How to obtain warranty service
Contact Pyramid Communications or an authorized service center for return authorization prior to returning any defective merchandise. Pack the returned units with sufficient packing material for safe carriage, and ship them prepaid to the service center, or the address listed below.
Exclusion of implied warranties and damages
Unless considered unlawful or unenforceable under applicable law, Pyramid Communications' liability under this warranty shall be limited to the repair or replacement of the defective units and shall not include damages of any kind, whether incidental, consequential or otherwise. Returning units that are out of warranty shall be deemed as authorization for repair, and sender shall be responsible for all reasonable repair costs.
Changes that provide improvements or enhance performance are not covered under this warranty.
Return address:
Pyramid Communications
15182 Triton Lane
Suite #102
Huntington Beach, CA 92649
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