QUAD 195D User manual

QUAD195
QUAD195D
MULTI-CHANNEL WIRELESS SYSTEM
WITH RF/POWER DISTRIBUTION
OPERATING INSTRUCTIONS
and trouble-shooting guide
LECTROSONICS, INC.
Rio Rancho, NM

2
QUAD195/D
INTRODUCTION
The design of Lectrosonics Quad Pak systems has evolved over the years as a result
of suggestions garnered during many conversations with industry sound mixers and
production engineers. These suggestions, together with meticulous attention to de-
sign and construction details, have resulted in a system that offers portability, versatil-
ity, and “bullet-proof” reliability of operation.
The QUAD195 system is a high performance, 4-channel wireless microphone
receiver system designed primarily for motion picture and television production in
the studio and in the field. The QUAD195 is a single antenna system for up to four
UCR195 receivers. The QUAD195D is a dual-antenna, diversity design for up to four
UCR195D diversity receivers.
Complete QUAD195 systems consist of a rugged mechanical assembly with built-in
rechargeable batteries for up to four receivers, one or two RF/power multi-couplers
(depending upon the model) and various options for antennas and chargers to meet
a wide variety of applications. The mechanical assemblies are covered with a pad-
ded, naugahyde carrying case with reinforced, zippered and hinged front and rear
panels for easy access to controls and connectors.
Problems such as interaction of receivers, intermodulation and desensitization have
been eliminated with the use of proven design principles in the active antenna multi-
couplers.
TABLE OF CONTENTS
INTRODUCTION .................................................................................................... 2
GENERAL TECHNICAL DESCRIPTION................................................................ 3
FRONT PANEL DESCRIPTION ............................................................................. 4
REAR PANEL DESCRIPTION................................................................................ 5
INSTALLATION....................................................................................................... 6
OPERATING INSTRUCTIONS ............................................................................... 6
TROUBLESHOOTING............................................................................................ 7
SPECIFICATIONS .................................................................................................. 8
SERVICE AND REPAIR ......................................................................................... 9
RETURNING UNITS FOR REPAIR........................................................................ 9
WARRANTY ............................................................................................Back cover

3
Multi-channel Wireless System
GENERAL TECHNICAL DESCRIPTION
The QUAD195 consists of two sub-systems; the housing which contains the gel-cell power supply and the RF/power
distribution module/s.
The housing is constructed of machined aluminum. A strap handle is bolted directly to the top panel of the housing
for ease of carrying. The lead-acid gel-cell batteries are connected in series to provide 12 VDC (nominal) power to all
the modules installed into the system. These batteries were selected for their recharge characteristics and reliability
under extreme conditions. The batteries are also highly resistant to damage caused by prolonged deep discharge.
The RF distribution circuitry includes helical resonators in the front end of the RF section to attenuate out-of-band RF
signals and prevent intermodulation and front end overload. Following the resonators is a low noise, low gain RF am-
plifier designed to evenly compensate for splitter losses in the stage that follows. A precision splitter/isolator divides
the RF signal into four isolated signals, which prevents spurious RF coupling between receivers. The splitter/isola-
tor is also termination independent, which prevents mismatched or disconnected RF outputs from affecting the other
receivers.
Power can be supplied to the distribution module from four possible sources. The primary source is the gel-cell bat-
tery pack built into the bottom of the housing. Secondly, power may also be provided through an external DC power
source of 12 to 20 VDC of either polarity. When an external source is connected, an internal relay automatically
disconnects the internal battery pack. If that DC source fails or is disconnected, the system automatically reverts to
the internal batteries. AC power can be provided through the charger included with the unit. While operating in the
AC mode, the internal batteries are also recharged. The individual receivers and the distribution module can also be
operated from internal 9V alkaline batteries housed inside each unit’s battery compartment. In this mode of operation,
all receivers and the distribution module/s must to be manually switched for “internal” power on the control panel of
each unti. All power circuits in the distirbution module are independently protected by internal auto-reset fuses. If the
power to one receiver fails, the other receivers will continue to operate.
CDM4smt Block Diagram
AUTO
SWITCHING
RELAY
MAIN
CONTROL
SWITCH
BUILT-IN
RECHARGEABLE
BATTERIES
THERMAL
FUSES
SPLITTER
&
ISOLATOR
RF
AMP
FRONT-END
HELICAL
RESONATORS
9V BATT
THERMAL
FUSE
CHARGING
CIRCUIT
ANTENNA
EXTERNAL
12V DC
CH-50
110/115V AC
RF
TO RECEIVERS
12V DC
POWER TO
RECEIVERS
FRONT PANEL DESCRIPTION
Rio Rancho, NM – USA

4
QUAD195/D
ANTENNA LEADS - These BNC terminated leads provide isolated RF signals for each receiver installed in the sys-
tem.
ANTENNA - The helical antenna provided with the unit attaches to this BNC connector directly with a twist lock mo-
tion. Other 50 Ohm antennas may also be used.
POWER SWITCH - The power switch has three positions. The OFF position turns off power to all modules in the sys-
tem. The MAIN/EXT position activates the system and draws power from the gel-cell batteries located in the bottom of
the system or from an external 12 Vdc power source. This power is distributed to all receivers installed in the system.
The INT 9V position activates the module only, drawing power from the module’s internal 9v battery.
EXT LED - This LED will light when power is provided from an external 12 Vdc power supply.
12V LED - This LED indicates operation from the internal gel-cell batteries.
CHARGING LED - This LED lights when the gel-cell batteries are being charged with the CH-50 charger. It will extin-
guish when the batteries achieve full charge.
AC LED - This LED indicates the unit is plugged into AC with the CH-50 charger. It remains on as long as the charger
is connected, regardless of the battery charge state.
INSTALLATION SCREWS - These screws are used for receiver installation and removable. See page 5 for further
instructions.
Installation Screws (2) Antenna Leads - 4 Main, 4 Diversity
Antenna
Ext power LED
Power Switch
Batt power LED
Charging LED
AC LED

Multi-channel Wireless System
REAR PANEL DESCRIPTION
SERIAL/FREQUENCY LABEL - This label indicates the serial number of the distribution module. It also indicates the
RF pass-band of the unit. IMPORTANT - The receivers installed in the unit must fall between the frequencies indicat-
ed on the label. Serious signal loss results if the receivers are outside the RF pass-band.
POWER XLR CONNECTOR - This 4 pin Switchcraft D4M connector is the power input jack for both the AC charger
and for external 12VDC power. Pins 1 and 4 are used for 12 VDC input. Pins 2 and 3 are utilized for 14 to 20 VAC
charging voltage.
POLARITY DIAGRAM - The polarity diagram on the lower panel indicates the wiring connections for the 4 pin XLR
power connector. Use this diagram when connecting your own external power source to the system.
9V ALKALINE BATTERY COMPARTMENT - The distribution module/s can operate from an internal 9V alkaline bat-
tery. Only alkaline or lithium batteries are recommended. Poor results may be expected with other battery types. This
compartment opens by pressing in and to the right. The compartment will adjust to various battery sizes.
POWER LEADS - These connectors provide power for the individual receivers. Insert the connectors into the jack
provided on each receiver.
INSTALLATION SCREWS - The two large counter-sunk phillips head screws in the central area between the receiv-
ers are used for receiver installation and removable. See the following page for further instructions.
RECEIVER AUDIO OUTPUT - Supplies a balanced, low impedance output at microphone level. The audio signal
is output on pins 2 and 3, while pin 1 is ground. The output level of this jack is controlled by the OUTPUT control on
the front panel of the receiver and by the range switches in the battery compartments of the receivers (see receiver
instruction manuals). The connector is a standard XLR type.
RECEIVER POWER IN JACK - Connects to the POWER LEAD for powering the receiver from the PRO 4 mini source.
A diode bridge is used in the external power input, so that the receiver will operate properly from either polarity.
Serial/Frequency Installation Receiver Audio Receiver
Label Screws Output Power In Jack
Power XLR
Connector
9V Battery
Compartment
Power
Leads
Polarity
Diagram
LECTROSONICS, INC.
USE ONLY ALKALINE 9 VOLT BATTERIES
WHEN INSTALLING RECEIVERS
TIGHTEN THESE SCREWS LAST
MADE IN USA
1
2
3 4
LECTROSONICS, INC.
581 LASER RD RIO RANCHO, NM 87124 [phone] [phone]
EXTERNAL POWER JACK
PIN 1:
PIN 2:
PIN 3:
PIN 4:
External Power Ground
CH-60 Charger Ground
CH-60 Charger (+)
Ext Pwr, +12 to 18 VDC, 300mA Typ.
CHARGING THE INTERNAL GEL-CEL PACK:
Insert CH-60 charger plug into jack on distribution
module rear panel. Charge until green “charging”
LED goes out or longer. Prolonged charging will
not harm the batteries.
1
2
3 4
RECEIVER INSTALLATION
Rio Rancho, NM – USA 5

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QUAD195/D
The QUAD195 is designed to contain up to four receivers. Installation of these receivers is quite simple. First, loosen
but do not remove, the two large counter-sunk phillips head screws in the front panel and the two in the rear panel of
the housing. (See drawings on previous pages) Insert the receivers, front end first (the end with the antenna con-
nection), in through the rear panel. Seat the front end of the receiver into the recessed lip of the front panel. Repeat
this for each receiver to be installed. After all receivers are in place, hold them in postion and tighten the front panel
screws first. These screws should be fairly snug but excessive force should be avoided and is unnecessary. You
are compressing a natural rubber tension tube. Tighten the rear panel screws last. Press firmly on the front of each
receiver to be certain that the receivers are secure.
At the front panel, attach the antenna leads to each receiver, making sure the BNC connector is securely and twisted
and locked into place. Set the power switch on the receivers to the EXT position. Antenna leads serving empty slots
do not need to be terminated.
At the rear panel, insert the power connectors into the power jack of each receiver. Note that the battery compartment
of each receiver may still be opened. It is recommended that each receiver have a fresh battery in place to serve as
backup power in the event that the internal battery pack or external power source fails for any reason.
OPERATING INSTRUCTIONS
After all the receivers have been installed, check to be sure that the receivers have their power switch set to EXT. Au-
dio leads should be balanced audio cables leading to the mixer or recorder.
Turn the system on by switching the power switch on the distribution module to MAIN-EXT. The power indicator LEDs
should light on all the receivers and the distributon module/s. If the internal gel-cell batteries are the power source,
the 12V LED will light. If the charger is connected and plugged into an AC source, the AC, 12V, and perhaps the
CHARGING LEDs will be on as well. If the power source is an external 12 VDC power supply, the EXT LED will be on.
Operate the wireless microphone according to the instructions included with the wireless systems.
After use, recharge the batteries immediately to prolong their life. The system incorporates industrial quality gel-cells
which can be left on charge indefinitely without damage (the charging circuitry will automatically limit the current flow
to the batteries). There are no “memory” problems with these batteries. The CHARGING LED will activate to indicate
the batteries are charging and will extinguish when the batteries are at full charge.
The external 12 VDC power supply may be connected to the system through the 4 pin XLR connector on the rear
panel. The connection is made by supplying the voltage through pins 1 and 4. Polarity is not critical since each
receiver contains a diode bridge at their external power input. When an external 12 VDC supply is used the EXT LED
activates. The internal batteries are automatically bypassed by a relay.
In emergencies, the system may also be operated from the internal 9V alkaline batteries in the individual receivers
and the distribution module/s. Switch all units to the INT power switch position. Operating time should be about 4 to 5
hours with an alkaline battery, 8 to 10 hours with lithium (see receiver instruction manuals for accurate operating times
with the receivers).
TROUBLESHOOTING

7
Multi-channel Wireless System
SYMPTOM POSSIBLE CAUSE
NO POWER LEDs OR AUDIO 1) Power switch in the OFF position. Switch to MAIN/EXT.
POWER LED LIGHTS ON CDM4smt 1) Power leads in back not connected to receivers.
BUT NO LIGHTS ON RECEIVERS Check power connections.
NO POWER LEDs, ALL 1) Gel-cell battery charge too low. Either switch to INT 9V setting
CONNECTIONS CHECK OK on CDM4smt, use an external 12 Vdc power supply, or operate on
110 Vac with the CH-50 charger. If the internal batteries are used,
be sure that all the receivers are switched to INT power
as well.
POWER AND MODULATION LEDs ON, 1) No audio connection to recorder or mixer. Check
BUT NO AUDIO connections.
POWER LEDs ON, NO MODULATION LEDs 1) Transmitters not on or in mute position. Check transmitters.
2) Transmitters have dead batteries, check batteries.
POOR SIGNAL/NOISE OR DROPOUTS 1) Antenna leads not connected, Check antennas.
2) Main antenna improperly connected. Check antenna.
3) Antenna “blocked” or in poor RF location. Try moving the
system or the antenna.
4) Transmitter modulation improperly set. Check mod levels.
INTERNAL GEL-CELLS NOT CHARGING 1) Check charger - Output voltage should be 14 to 20 VAC.
SPECIFICATIONS
RF/POWER DISTRIBUTION MODULE
Rio Rancho, NM – USA

8
QUAD195/D
RF Gain: 1.5 dB
RF Output: Four outputs, 50 Ohm, BNC
Filtering: Two section helical resonator
Third Order Intercept: +25 dBm
Power Input: 12 to 20 Vdc (either polarity)
Pins 1 and 4 on XLR power jack
CH-50 adapter for AC operation
14 to 20 Vac, 50/60 Hz, 1/2 Amp
Pins 2 and 3 on XLR power jack
16 to 22 Vdc 1/2 Amp
Power Consumption: 45 mA (plus 55 mA for each CR187 receiver)
Total 265 mA
Connectors: RF: BNC
POWER INPUT: 4 pin XLR (Switchcraft D4M)
POWER OUTPUT: 2.5mm power jack
A/D Electronics part # ADC-014
Short Circuit Protection: Auto-reset thermal fuses (6)
MECHANICAL ASSEMBLY
Construction: Machined aluminum panels, housings, and mechanical parts.
Dimensions: 6 x 8 x 9 inches (in carrying case)
Weight: 14.25 lbs including 4 CR187 receivers
Batteries: Two 6V, 4.8 Ah rechargeable gel-cells
Panasonic LCR-456-P
Operating Time per Charge: 14.5 Hours
Specifications subject to change without notice.
SERVICE AND REPAIR
If your system malfunctions, you should attempt to correct or isolate the trouble before concluding that the equipment
needs repair. Make sure you have followed the setup procedure and operating instructions. Check out the intercon-
necting cords and then go through the TROUBLE SHOOTING section in the manual

9
Multi-channel Wireless System
We strongly recommend that you do not try to repair the equipment yourself and do not have the local repair shop
attempt anything other than the simplest repair. If the repair is more complicated than a broken wire or loose connec-
tion, send the unit to the factory for repair and service. Don’t attempt to adjust any controls inside the units. Once
set at the factory, the various controls and trimmers do not drift with age or vibration and never require readjustment.
There are no adjustments inside that will make a malfunctioning unit start working.
LECTROSONICS service department is equipped and staffed to quickly repair your equipment. In-warranty repairs
are made at no charge in accordance with the terms of the warranty. Out of warranty repairs are charged at a modest
flat rate plus parts and shipping. Since it takes almost as much time and effort to determine what is wrong as it does
to make the repair, there is a charge for an exact quotation. We will be happy to quote approximate charges by phone
for out of warranty repairs.
RETURNING UNITS FOR REPAIR
You will save yourself time and trouble if you will follow the steps below:
A. DO NOT return equipment to the factory for repair without first contacting us by letter or by phone. We need to
know the nature of the problem, the model number and the serial number of the equipment. We also need a phone
number where you can be reached 8 am to 4 pm (Mountain Standard Time).
B. After receiving your request, we will issue you a return authorization number (R.A.). This number will help speed
your repair through our receiving and repair departments. The return authorization number must be clearly shown on
the outside of the shipping container.
C. Pack the equipment carefully and ship to us, shipping costs prepaid. If necessary, we can provide you with the
proper packing materials. UPS is usually the best way to ship the units. Heavy units should be “double-boxed” for
safe transport.
D. We also strongly recommend that you insure the equipment, since we cannot be responsible for loss of or damage
to equipment that you ship. Of course, we insure the equipment when we ship it back to you.
Mailing address: Shipping address: Telephones:
Lectrosonics, Inc. Lectrosonics, Inc. Regular: [phone]
PO Box 15900 581 Laser Rd. Toll Free [phone]
Rio Rancho, NM 87174 Rio Rancho, NM 87124 FAX: [phone]
USA USA
World Wide Web: http://www.lectrosonics.com Email: [e-mail]
Rio Rancho, NM – USA

LIMITED ONE YEAR WARRANTY
The equipment is warranted for one year from date of purchase against defects in
materials or workmanship provided it was purchased from an authorized dealer. This
warranty does not cover equipment which has been abused or damaged by careless
handling or shipping. This warranty does not apply to used or demonstrator equip-
ment.
Should any defect develop, we will, at our option, repair or replace any defective parts
without charge for either parts or labor. If we cannot correct the defect in your equip-
ment, we will replace it at no charge with a similar new item. We will pay for the cost
of returning your merchandise to you.
This warranty applies only to items returned to us, shipping costs prepaid, within one
year from the date of purchase.
This warranty gives you specific legal rights. You may have additional legal rights
which vary from state to state.
LECTROSONICS, INC.
581 LASER ROAD
RIO RANCHO, NM 87124 USA
July 7, 1999