Xantech 796-20 Installation Instructions - page 4
4
Emitter Expansion
1. Zone Output Ports. Since the 796-20 zone output ports (A and B) are driven in parallel and have a
470-Ohm resistor in series with each, you may expand up to four emitters simply by using two dual
emitters, such as the 284-00 or the 286-00.
To expand beyond 4 emitters, connect a 789-44 Connecting Block or a 791-44 Amplified Connecting
Block at the "A" or "B" port to achieve the desire number of emitters. Simply use a 2-conductor cable
with a mono mini plug on one end and stripped ends at the other. Connect the signal lead (from tip
of the mini plug) to the INPUT terminal of the 789-44 or 791-44 block and the other lead to the GROUND
terminal of the block.
Do not use the IR RCVR jack on the connecting blocks for this purpose!
Also, a power supply is
not needed
for the 789-44 when used solely for emitter expansion.
2. When using 791-44's for emitter expansion from the zone ports, you may power them from the
+12
and G terminals on any one of the 796-20 IR ZONE terminals. Be sure to take the current drain of the
791-44's into consideration (10 mA each) and the extra emitters you use, when calculating the total
current for choice of power supply.
3. COMMON OUT Port. This may be used to drive one single or one dual emitter to operate common
components. When more are required, use the COMMON OUT port to drive the input of a 791-44
Amplified Connecting Block as shown in
Fig. 2
. This allows the use of up to 10 single or 10 dual emitters
to control the common sources.
ZONE CROSS-TALK CAUTION
Be sure to use MS Mouse Emitter Shields (available separately) with the 282M and 284M series emitters,
if you use them instead of the 283M's and 286M's. The MS1 will stop the stray IR output of a zone emitter
or a common source emitter from bleeding over into another zone or zones. This is especially important
when zone receivers and source equipment are stacked close to each other.
796-20 AS A ZONE EXPANDER FOR THE 795-20
Fig. 4
shows the 3-lead connection necessary between the 795 and the 796 for zone expansion of a 795.
• For simplicity, only six zones, 1, 2, 3, 7, 8, and 9 are shown in the diagram. A total of nine zones are
possible, each wired with any
choice of IR receivers & key-
pads, in the same manner as
shown in
Fig. 2
.
• Plug emitters into the ZONE
EMITTERS A and B jacks as
required.
•
NOTE: Do not plug emitters
into ZONE 4 A or B on the
795.
Emitters for zone 4 must
be plugged into the ZONE 4 A
or B jacks on the 796.
• Power is applied to the 796 as
well as the 795 via a power
supply connected to the +12V
jack on the 795. Be sure the
current drain of all devices is
taken into consideration when
calculating the total current for
choice of power supply.
796-20
Fig. 4
A 796-20 Connected As a Zone Expander For The 795-20
ZONE
A
B
A
B
A
B
+12V
ZONE 1
ZONE 2
ZONE 3
ZONE 4
ZONE IR INPUTS
ZONE 3
ZONE 2
ZONE 1
+12 IN G +12 IN G +12 IN G +12 IN G
POWER
To Zone IR
Receivers,
Keypads, etc.
To Zone IR
Receivers,
Keypads, etc.
MODEL 796-20
6-ZONE EXPANDER
4-ZONE AMPLIFIED
BLOCK
MODEL 795-20
ZONE 9
ZONE 8
ZONE 7
COMMON
ZONE IR INPUTS
+12 IN G +12 IN G +12 IN G +12 OUT G
A
B
A
B
A
B
ZONE 7
ZONE 8
ZONE 9
ZONE EMITTERS