Telex CM300 ~ C M H K l l R M 3 0 0 c m b e ~ e d i n a l t h r e e ~, ?hs a 3 0 0 mom& in a

	NW: Opemdion of a aydm or maximum load dOCS not
2.1 Power Rquhm&, Type Of System, Pow-	allow for other miations such as fempermun, line
	*e,	able ,-er	and s u w . A nwrt pnrdcni
Method And Power Supply(i)	o p p m o a h & & o p c ~ ~ s y ~ ~ n o n o n f l r n nof8 0 %

-Pad*.

Power Ranuremnts

In (3) above, a l d power supply provides 12 to 24 volts To maintain a bridging 10,000 ohm0 bpedanw to the DC at 120 mill*mpms peak for esch station, or, for intenmu line, the CM300/RM300 requires +18 to +35 nmote single station operation, two 9-volt batteries in volts DC. To opemte in I d power or t a t h y modes,the mliesrmy be&.

CM300/RM300 rsguires from +15 to +35 volts DC,but

ic opesable at reduced performauce from +12 to +17.9 In (1) & (3) above, the two Wireb curyiug audio require

volts.one system tamhation wnsisting of a UX) ohm mistor mula 100 mimfarad capacitor in series. This combination i s ~ r r o s s t h e t w o w i r c s . Coanectpolorized @tors negative to system circuit common.

~ C M H K l l R M 3 0 0 c m b e ~ e d i n a ( l ) t h r e e ~

system, (2) two wirs system, or (3) speciPl* win ToW l tbe 0%300IRM300:

sy--

PWCMR M@@ 1.

P o w e r i s m r r i ~ t o t h e \ m i t f r o m a s y s t e m ~ s u p p l y using threediffcrrnt methods:

~t h e t y p e o f s y s t e m i n w h i c h t b e CM300/RM300 is to be htalled. Detemine thepow- * ~ d p o ~ e r s l l p p l ~ ( i ~ ) .

(1)In a 3 - 6 system ('Series 17" type), the power is

Stpuatefromtheaudiodsuppliedcmtnlly.

(3)I n a ~ t w o w i r s S y s t e m ( L o u l P o w o ) , e s c h c M 3 0 0 ~ 3 0 0is l d y pawerrd md opmtes on

switch ChnneJ two. Ths cM300/RM300s are

in- using two win able. P o r n is

suppliedbyabatteryoraloulpowgsupply. The

local p o w supply should be isolated from eutb

ground.

In (1) above, the power supply is a regulated supply, 24 volts DC to 32 volts DC, 1.5 .mperes. This supply cm o p u w up to 50 CM300/RM300 and 30 CM300LIRM300Luser strtiws.

For case (2) above, rsgtming cutmats shown, the supplies versus rmximum rmmber of Etatiom pmvered are:

2.Dstaminethemwntingof theC!M300/RM300.

3.Read 'ChoosingHadsets or Ehds&s'.

4.Dcramincthecabling mpkmata .

5.Create a system block diagram& equipment Si (if not W y available), them iustalI the systua

6.Verify wmct rystemopention by using thecheckout procedurein this dvpter (2.6).

7.Update the systeal block diagm, squipment list and

my 0 t h -onto reflect the 'as hitdled' dguration . If the system block diagram was origi~Uyd by RTS Systems, swxi a copy of the 'as instrlled' system block diagnm to RTS Systems.

This diagram will be ussd to update the original docummtoton. d for fuhueservice ~ p p t .

!xx!!2		!xaL	(60n1,Q	?hs a 3 0 0 mom& in a		console, use the installation
power S m l y phl300 (37mA)		RM300L		diagram at	the back of this maoual for cutout d i i i w s
Model PS8 (0.43A)	11			md d i n	g hole I d - .	The RM300 mounts in an
				EIA 19 inch rack.
Model PSI5 (1.OA)	27
Model PS31(1.5A)	41

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