Scully 280 Series - Page 9

and head sect.ons. Betore assembling the units
consull the tnterconnectltlg diagram ( fi". I
lor the proper I nstallaUon 01 caDles.
Connect thc small plug P102 to the rc_
lay panel wider Ule tape transport and the large
32- p;n connector P605 to the back of Ihe ampli_
fier. In multi_channel Wlits the 32_pln connec_
tors are mari<ed channel 1. 2. elc. to male with
their respect,ve amplifiers, which are simi_
larily Identif ied.
2.4. POWER CONNECTlO:O<
For ""rmal operation. Connect the jXlwe r
cable from the AC power input eotmeetor on th e
transjXlrt mo·.rnled supply to a 115_120 volt AC.
60_cycle power outlet to assure proper equip_
ment grounding.
2,5. OUTFUT (See figure 2-3 , !
A female type X LR connector is sup_
plied. ThIs cJnnector Is plugged Into the Out_
put Receptacle J603, nornlally 4dbm Inlo a
600-ohm load. However, provision has been
made tor outrut level metering of -oil dbm.
2.6.
INPUTS (See figure 2-3.)
2.6.1. Line
A
throc_pin male XLR COnncctor forthe
line Input Is required. 1\ mates "'ith "Line"
Receptacle J(02;n the rear of the ampllfleras_
sembly. This balanced bridging line input has a
nominal ImJl"dance of 10.000 ohms and Is su it_
able for bri.:ging 600 ohm lines wilh nominal
le;-els from _10 dbm to .10 dbm.
2.6 . 2. Mio",:' phonc
A similar three_pin male XLR connec-
tor for the microphone Input J601 on Ule rear
of the amplifier assembly is also required. Any
low_impedance microphone from 150 to 2>0
ohms can be accommodated with nominal le;-els
up to _30 dbm. The use of high_impedance mi_
crophones Is not recommended .
2,7. REMOTE
The Scully 280 Ikmote Contro l Unit, Cat-
alog 502210100can be supplied to provide remote
operalion in the Play, ReWInd. Fast Fo u'ard,
Stop and Heeord modes. Th e Hc eo rd function
operates atler manual pre-sele C ti On 0 1 (h e line
or mlc mode on the amplifier pa ne !. When the
remole control unit is not being used, the ""mmy
plug P103 must be plugged Into the remote Co n -
trol receptacle Jl03 on the tape transpOrl eon-
Irol pane!.
2,8, PHON<:S
A phone jack for high Impedance head_
plOnes Is provided on Ule front of the amp:ifier
panel. The phones may be used 10 monitor Ule
playback or reproduce output as well as Ule
record amplll\er Inputs from the line or m!cro_
phone Input.
2.9. UNE TERMINATION
The Line Termlnatlons .... ltchon the elec-
leonlcs panel above the phone jack provides a
6OQ-ohm terminallon on Ihe Une outP'J1 when
the switch Is In the ON p3Sltion. The uoll Is
".,termlnated In Ule OFF posilion.
2.10. PERFORMANCE CHECKS
After InstallatiOn, a
ance Checks should be made.
The Inslructlons for the petforrnance
cbecks listed below will be found In the Per-
Checks aM Alignment poHlon of Ule
Electronio Section (Section V).
I, l)e-magnetllatlon of neads
2. Playback level
3. Playback allgnment and
frequency response
4 Record alignment and
calibration
5. Overall record frequency
r esponse
6. Record noise balance
7. Erase adjustment
8. Li nearity adjustment
9. Flutter and wow measurement