Hot Standby Switch Operation, Maintenance and Installation Manual.pdf · RF Technology Hot Standby Switch Page 7 of 9 INSTALLATION_ 5 Check the HSS GREEN PWR LED is lit ON. 6 Press

Eclipse Series

RF Technology [email protected]

September 2006

Hot Standby Switch Operation, Maintenance and

Installation

This manual is produced by RF technology Pty Ltd 10/8 Leighton Place, Hornsby 2077, Australia

Copyright © 2006 RF Technology Pty Ltd

RF Technology Hot Standby Switch Page 2 of 9

CONTENTS CONTENTS

Contents 1. Operating Instructions 3 2. I/O Connections 3 3. Circuit Description 4

3.1 Coaxial Relays 4 3.2 Line Relays 4 3.3 Alarm and Fault Triggers 4 3.4 Alarm Outputs 5 3.5 Voltage Regulator 6 3.6 Reset HSS 6

4. Alignment Procedure 6 5. Installation 6 6. Parts List 8 7. Board Layout 10 8. Typical Connection Diagram 11 9. Schematic Diagram 12


1___________________________________________OPERATING INSTRUCTIONS

1 Operating Instructions The HSS has two modes of operation, MAIN and STANDBY. MAIN mode is the normal operation of the MAIN repeater and STANDBY mode is when the HSS has switched to the standby repeater. There are two front mounted LEDS. If the main repeater is connected correctly to the HSS the GREEN PWR LED signifies that the main repeater has no alarms or fault conditions. If an alarm or fault condition arises in the main repeater the RED ALM LED will light up and the HSS switches to STANDBY mode. The HSS does not need to be actively powered for STANDBY mode so in the event of complete power supply failure to the main repeater the HSS defaults to STANDBY automatically. For continued operation the standby repeater should have a battery backup system and/or separate power supply.

2 I/O Connections

DB-25 Pin Connector Function/Signal Pins Relay Standby Position

+12V DC IN 1, 14 - STBY_DIRAUD_OUT 2 STBY_DIRAUD_IN 15

Closed Link

Pin 3 3 Open STBY_BALAUD_OUT 16 STBY_BALAUD_IN 4

Closed Link

Pin 17 17 Open STBY_PTT 5 STBY_COS 18

Closed Link

Pin 6 6 Open MAIN_PTT 19

Pin 7 7 Closed Link

MAIN_COS 20 Open T/R-RELAY_MAIN 8 -

RFO_MAIN 21 - ALARM_LOW_IN1 9 - ALARM_LOW_IN2 22 -

ALARM_HI_IN1 10 - ALARM_HI_IN2 23 -

EXT_BATT 11 - RESET (FORCE_MAIN) 24 -

FORCE_STANDBY 12 - GND 13, 25 -


3 CIRCUIT DESCRIPTION ______________________________________________

Option DB-9 Pin Connector Function/Signal Pins Relay Standby Position

User assigned 5 User assigned 9

Closed Link

User assigned 4 Open User assigned 8 User assigned 3

Closed Link

User assigned 7 Open User assigned 2 User assigned 6

Closed Link

User assigned 1 Open

3 Circuit Description The following descriptions should be read as an aid to understanding the schematic diagram at the rear of this manual. 3.1 Coaxial Relays The coaxial relays switch the RF signal path between two repeaters. A separate relay is used for antenna – receivers and another for antenna – transmitters. Both relays are powered ON in normal operation, in the MAIN mode. Transistors Q10 and Q11 drive each relay. In STANDBY mode the relays default to OFF position so are particularly suitable for monitoring an ac or dc power failure condition. 3.2 Line Relays The relays RL1, RL2, RL3 and RL4 provide the input/ output signal line switching facility. Transistor Q9 drives these relays in unison with Q10 and Q11 operation. All relays operate together. Either all are ON or all are OFF. The schematic shows the relays in STANDBY or OFF position. Four signal lines are switched through RL1, RL2 and the DB-25 connector. Another three signal lines are available for user expansion switched through RL3 and the DB-9 connector. 3.3 Alarm and Fault Triggers ATI Alarm output The HSS is designed to work with the Eclipse Alarm Trunking Interface (ATI) and can also be easily interfaced to third party equipment. The ATI combines the receiver and transmitter alarm signals and the output is brought to a common pin (ATI card DB-25 Pin 4). The ATI also monitors and will alarm if either the receiver or transmitter is disconnected from the rack frame connector. In alarm condition the standard ATI output is Alarm_High.


3.4 ALARM OUTPUTS Receiver Alarms LED Flash Cadence Fault Condition 5 flashes, pause Synthesizer unlocked 4 flashes, pause Tuning voltage outside limits 3 flashes, pause Signal level below preset threshold (fixed link) 1 flash, pause dc supply voltage low or high LED ON continuously External squelch is active

Transmitter Alarms LED Flash Cadence Fault Condition 5 flashes, pause Synthesizer unlocked 4 flashes, pause Tuning voltage out of range 3 flashes, pause Low forward power 2 flashes, pause High reverse (reflected) power 1 flash, pause Low dc supply voltage LED ON continuously Transmitter timed out

Input Signal Lines The alarm inputs are diode protected. Two Alarm_Low inputs (pin 9 and pin 22 at D6 and D7) and two Alarm_High inputs (pin 10 and pin 23 at D8 and D9) are provided so that third party equipment may also be monitored. The external Eclipse power amplifier may be monitored through two lines at pin 8, T/R_Relay_Main and pin 21, RFO_Main. Both lines must be connected for proper operation. Q1, Q7 & Q2 provide the logic for alarm condition. To force the HSS into STANDBY mode the Force_Stby line pin 12 and D11 should be connected to GND momentarily. This line is protected by diode D11. 3.4 Alarm Outputs Alarm Double Beep Audio Tone Any main repeater alarm or fault condition will cause the HSS to switch to STANDBY. If link JP2 (Alarm Beep Enable) is fitted, a double beep tone of approximately 8 seconds interval is mixed in with the audio on the standby repeater (pin 2, Stby_DirAudio_out). RV3 adjusts the beep tone level. Power Loss Alarm Double Beep Audio Tone Loss of ac power to the main repeater or dc power supply failure in the main repeater will cause the HSS to switch to STANDBY. If links JP1 (Low voltage detector) and JP2 (Alarm Beep Enable) are fitted, a double beep tone of approximately 2 seconds interval is mixed in with the audio on the standby repeater (pin 2, Stby_DirAudio_out). RV3 adjusts the beep tone level. RV2 sets the threshold of the low voltage detector circuit.


5 INSTALLATION_____________________________________________________ PTT for Standby Transmitter By default U1 provides the PTT signal to key up the standby transmitter for the alarm beep tones. This feature can be disabled by fitting link JP4. In this case the alarm beep tones will only be transmitted when the standby receiver or other device keys up the standby transmitter. HSS reaction time switching to Standby Mode R25 (or RV1 if fitted) adjusts the trigger reaction time up to 10 seconds. This allows for short duration power outages without triggering the alarm condition. 3.5 Voltage Regulator The dc supply to U3 voltage regulator is derived from +12V input pins 1, 14 (from the MAIN repeater) and Ext_Batt input pin 11 (from the STANDBY repeater). The Ext_Batt input continues to supply dc to the HSS if the main repeater power supplies have failed. This allows the alarm beep tones function to continue. 3.6 Reset HSS The rear mounted RESET push button switch may be used to reset the HSS to the MAIN position. Alternately the RESET signal line on Pin 24 and D10 may be taken LOW momentarily for a remote RESET function. This line is protected by diode D10. NOTE: The main repeater must be in good operational condition before the RESET function can be enacted otherwise the HSS will detect any alarm or fault condition and shall NOT switch to MAIN mode.

4 Alignment Procedure There is no alignment procedure. The HSS is factory set up to operate automatically for most situations. The user adjustments are covered in the previous section.

5 Installation 1 Locate and mount the HSS securely in a suitable position between or near the

MAIN and STANDBY repeaters. 2 Attach to the DB-25 connector the appropriate wiring for power supplies and

signal inputs. Attach to the DB-9 connector more signal lines if required. 3 Connect the rf cables to the HSS N-type connectors between Antenna and

Transmitters and also between Antenna and Receivers. Please note the MAIN and STANDBY connector positions carefully.

4 Check that the MAIN repeater is operating normally – no alarm or fault

conditions.


INSTALLATION_ 5 Check the HSS GREEN PWR LED is lit ON. 6 Press the RESET push button switch on the rear of the HSS to switch it to

MAIN repeater. The RED ALM LED should be OFF and the main repeater is functioning properly. This is the normal operation mode.

7 Test the STANDBY mode by introducing an alarm in the main repeater. If an

ATI is fitted simply pull out the receiver or transmitter sufficiently to disconnect it from the rack frame connector and an alarm will occur. The HSS should switch to STANDBY and the RED ALM LED should light ON.

8 If JP1 and JP2 are set correctly the HSS will introduce a double beep audio

tone mixed with the standby transmitter audio. This is the STANDBY mode. 9 To RESET the HSS, restore the main repeater to normal operation (no alarms)

before pressing the RESET push button switch. 10 This ends the installation but the remote RESET (FORCE_MAIN) and remote

FORCE_STANDBY can be tested in a similar way.


Designator Description Part Number C1 100N 10% 50V X7R RD.2 46/2001/100N C2 100N 10% 50V X7R RD.2 46/2001/100N C3 100N 10% 50V X7R RD.2 46/2001/100N C4 100N 10% 50V X7R RD.2 46/2001/100N C5 100N 10% 50V X7R RD.2 46/2001/100N C6 100N 10% 50V X7R RD.2 46/2001/100N C7 470U 25V RB Electrolytic 41/2001/470U C8 10U 35V RB Electrolytic 41/2001/010U C9 10U 35V RB Electrolytic 41/2001/010U C10 47U 25V RB Electrolytic 41/2001/047U C11 100N 10% 50V X7R RD.2 46/2001/100N C12 100N 10% 50V X7R RD.2 46/2001/100N C13 10U 35V RB Electrolytic 41/2001/010U D1 SIL GP 1N4002 21/1010/4002 D2 SIL GP 1N4002 21/1010/4002 D3 SIL GP 1N4002 21/1010/4002 D4 SIL GP 1N4148 21/1010/4148 D5 SIL GP 1N4148 21/1010/4148 D6 SIL GP 1N4148 21/1010/4148 D7 SIL GP 1N4148 21/1010/4148 D8 SIL GP 1N4148 21/1010/4148 D9 SIL GP 1N4148 21/1010/4148 D10 SIL GP 1N4148 21/1010/4148 D11 SIL GP 1N4148 21/1010/4148 D12 R/A, RED 21/1010/LEDR D13 R/A, Green 21/1011/LEDG D14 SIL GP 1N4002 21/1010/4002 D15 SIL GP 1N4002 21/1010/4002 D17 SIL GP 1N4148 21/1010/4148 D18 SIL GP 1N4148 21/1010/4148 D19 SIL GP 1N4148 21/1010/4148 JP1 2 Way Pin Header 35/2501/0002 JP2 2 Way Pin Header 35/2501/0002 JP3 2 Way Pin Header 35/2501/0002 JP4 2 Way Pin Header 35/2501/0002 P1 R/A PCB Mount DB25 Male 35/5010/025M P2 R/A PCB Mount DB9 Female 35/5010/009F Q1 2N3904 NPN TO92 27/2020/3904 Q2 2N3904 NPN TO92 27/2020/3904 Q3 2N3904 NPN TO92 27/2020/3904 Q4 2N3904 NPN TO92 27/2020/3904 Q5 2N3904 NPN TO92 27/2020/3904 Q6 2N3904 NPN TO92 27/2020/3904 Q7 2N3906 NPN TO92 27/2010/3906 Q8 2N3906 NPN TO92 27/2010/3906 Q9 TIP31 NPN TO220 27/2010/TP31 Q10 TIP31 NPN TO220 27/2010/TP31 Q11 TIP31 NPN TO220 27/2010/TP31


Designator Description Part Number Q12 2N3904 NPN TO92 27/2020/3904 R1 10K 5% 0.25W Axial 51/1040/010K R2 10K 5% 0.25W Axial 51/1040/010K R3 10K 5% 0.25W Axial 51/1040/010K R4 10K 5% 0.25W Axial 51/1040/010K R5 4K7 5% 0.25W Axial 51/1040/04K7 R6 10K 5% 0.25W Axial 51/1040/010K R7 10K 5% 0.25W Axial 51/1040/010K R8 10K 5% 0.25W Axial 51/1040/010K R9 10K 5% 0.25W Axial 51/1040/010K R10 10K 5% 0.25W Axial 51/1040/010K R11 10K 5% 0.25W Axial 51/1040/010K R12 10K 5% 0.25W Axial 51/1040/010K R13 1K 5% 0.25W Axial 51/1040/001K R14 47K 5% 0.25W Axial 51/1040/047K R15 1K 5% 0.25W Axial 51/1040/001K R16 1K 5% 0.25W Axial 51/1040/001K R17 1K 5% 0.25W Axial 51/1040/001K R18 1K 5% 0.25W Axial 51/1040/001K R19 1K 5% 0.25W Axial 51/1040/001K R20 100K 5% 0.25W Axial 51/1040/100K R21 100R 5% 0.25W Axial 51/1040/0100 R22 100R 5% 0.25W Axial 51/1040/0100 R23 100R 5% 0.25W Axial 51/1040/0100 R24 100R 5% 0.25W Axial 51/1040/0100 R25 100K R/A MULTI-TURN 53/THH1/100K R26 10K 5% 0.25W Axial 51/1040/04K7 R27 10K 5% 0.25W Axial 51/1040/04K7 R28 10K 5% 0.25W Axial 51/1040/04K7 R29 10K 5% 0.25W Axial 51/1040/04K7 R30 10K 5% 0.25W Axial 51/1040/010K R31 10K 5% 0.25W Axial 51/1040/04K7 R32 10K 5% 0.25W Axial 51/1040/010K R33 10K 5% 0.25W Axial 51/1040/04K7 RL1 12V DPCO Miniature 96/2000/012V RL2 12V DPCO Miniature 96/2000/012V RL3 12V DPCO Miniature 96/2000/012V RL4 12V DPCO Miniature 96/2000/012V RV2 10K SINGLE TURN Vertical 53/1020/010K RV3 10K SINGLE TURN Vertical 53/1020/010K U1 HC908QT MCU 26/68HC/908Q U2 74C00 QUAD NAND DIP14 26/2031/4C00 U3 LM7805 Voltage Regulator 25/2040/7805 RL5 Coaxial Relay, 12V 96/COAX/0001 RL6 Coaxial Relay, 12V 96/COAX/0001

HSS Pcb Layout

10

1920

18

5

15

2

COS+PTT

ALM

HI Z

AUDIO

COS+PTT

13, 25

1, 14

11EXT BATT+12VDC

+12VDC

GND

GND

GND

462

THE HOT STANDBY SWITCH (HSS) MONITORS THE MAIN REPEATER

ANY ALARMS IN THE MAIN RECEIVER OR TRANSMITTER, LOSS OF AC OR DC SUPPLY VOLTAGE OR LOW OUTPUT POWER

WILL CAUSE THE HSS TO SWITCH TO THE STANDBY REPEATER.

RFOT/RRFOOPTION

821

ATI

PCB

4K7

RELAYS IN

STANDBY

POSITIONSTANDBY REPEATER (rear view)

MAIN REPEATER (rear view) HOT STANDBY SWITCH

PS

PS

TX

TX

RX

RX

PCB

PAJP19 JP19moved moved

JP4moved

DIR

GND-COS-

PA

PCB

RL2A

RL1A

RL1B

JP7 JP8JP9 ALL

OFF

JP7 JP8JP9 ALL

OFF

THE HSS WILL ONLY SWITCH BACK TO THE MAIN REPEATER IF THE ALARMS OR FAULT

CONDITIONS HAVE BEEN REMOVED AND THE RESET LINE IS TOGGLED

ATI Preparation

Cut link PS2 C-L

Solder link GND to COS-

RX Preparation

Move JP19 to other position

Remove JP7, JP8, JP9

TX Preparation


RX Preparation

Remove JP7, JP8, JP9

TX Preparation


JP4, JP5 Line Audio standard

Title

Author

File

Revision

Document

Date Sheets

HSS- Typical connections

G LeeRFT

D:\1My Documents\Cad\HSS connect.dsn

1.0 5 September 2006 1 of 1

A

B

C

DD

C

B

A

Title

Number RevisionSize

B

Date: 4-Sep-2006 Sheet of File: D:\Protel Files\Work Files\Hotstandby.ddb Drawn By:

RF TX MAIN

RF TX BKP

RF RX BKP

RF RX MAIN RF RX

RF TX

+12V

+12V

Q11TIP31

R410K

+12V

R1

10K

Q13904

R2

10K

T/R-RELAY_MAIN

RFO_MAIN

Q73906

R14

47K

+12V

R310K

R810K

Q23904

(NORMAL LOW)

C2100N

R23100

HOT STANDBY SWITCH

G. LOU1 1

105/9180

RF SWITCH

(ALARM HIGH)

(EXT PA ONLY)

(EXT PA ONLY)

D12

ALARM

R151K

(NORMAL HIGH)(ALARM LOW)

(FORCE_MAIN)

D101N4148

Q33904

R7

10K

C810U

C1047U

R22100

Q10TIP31

D31N4002

Q53904

R910K

R181K

+5V

R284K7

Q63904

C7470U

C910U

Low voltage detector

+12V

D11N4002

RL2B

RL2A

+12V

STBY_BALAUD_IN

STBY_DIRAUD_OUTSTBY_DIRAUD_IN

STBY_BALAUD_OUT

RL1A

RL1B

STBY_COS

RL3A

RL3B

RL4A

RL4B

+12V

+12V

STBY_PTT

MAIN_PTT

MAIN_COS

ALARM_LOW_IN1

ALARM_LOW_IN2

D61N4148

D71N4148

+5V

R610K

ALARM_HI_IN1

ALARM_HI_IN2

D81N4148

D91N4148

D111N4148

C1100N

89

10

U2C

74HC00

64

5

U2B

74HC00

R20100K

+5V

31

2

U2A

74HC00

Q83906

R161K

D41N4148

Q43904

R24100

R21100R25

100KR1110K

1112

13

U2D

74HC00

R26

4K7

Q9TIP31

R27

4K7

R5

4K7+12V

D21N4002

VI1

GN

D2

VO 3

U3LM7805 D13

PWR

R1010K

+5V

147

VDD

VSS

U2E74HC00

+5V

C4100N

+12V

+5V

C6100N

C5100N

C3100N

R19

1K

R131K

12

JP1

R17

1K

13251224112310229218207196185174163152141

P1DB25

VDD 1

PA5 2

PA4 3

PA3 4PA25

PA16

PA07

VSS8

U168HC908QT

pin3

STBY_DIRAUD_OUT

pin3

STBY_BALAUD_IN

STBY_DIRAUD_IN

STBY_DIRAUD_IN

STBY_BALAUD_INpin17

STBY_DIRAUD_OUT

STBY_BALAUD_OUT

STBY_BALAUD_OUT

STBY_PTT

STBY_PTTSTBY_COS

STBY_COS

pin6MAIN_PTT

MAIN_PTT

MAIN_COS

pin7MAIN_COST/R-RELAY_MAIN

T/R-RELAY_MAIN

RFO_MAIN

RFO_MAINALARM_LOW_IN1ALARM_LOW_IN2

ALARM_LOW_IN1

ALARM_LOW_IN2

ALARM_HI_IN1

ALARM_HI_IN2

ALARM_HI_IN1ALARM_HI_IN2

RESET

ALM

ALMEXT_BATT

RESET

EXT_BATT

FORCE_STBY

D5

1N4148

R1210K

+5V

+12V

594837261

P2

DB9

+5V

ACTIVE_LOW

BA

TT_L

OW

RESET

FORCE_STBYEXT_BATT

FORCE_STBY

R2947K

D171N4148

RV210K

D151N4002

D191N4148

ALM_TONE

D141N4002

EXT_BATT

ALM_LED

ALM_LED

+12V

D181N4148

BA

TT_L

OW

+12VC13

10uRV3

10K

C12

100n

C11100n

Q123904

R3010K

R314K7

ALM_LED

VIN

VIN

ALM

_TO

NE

12

JP2

ALM

_BEE

P_M

IX

12

JP3

12

JP4

R3210K

Batt low enable

ALM PTT

Alarm beep enable

2

3

4

5

6

7

8

9

10

11

12

15

16

17

18

19

20

21

22

23

24

R334K7

pin17

pin7

pin6

The signals used for RL1B,RL2B,RL3A,RL3B,RL4B are identical,*Note:

(from standby RX DIR_AUD)(to standby TX Hi-Z)

alarm triggered PTT(enabed by JP4 off)

lables in this schematic diagram are for description only.

OPTIONAL

JP1

JP2

JP3

JP4

ON OFF

Batt low alarm enable Batt low alarm disable

Alarm beep disableAlarm beep enable

reseved reseved

Alarm triggered PTT enableAlarm triggered PTT disable

JUMPER SETTINGS

ALM_BEEP_MIX(From JP2)

1.

2. All relays are shown in the standby positions

*to be included in ver2 pcb