SPECIFICATIONS
1.0 415 SWEEP/MARKER GENERATOR
SPECIFICATIONS
1.1 Outputs available (selected by FUNCTION
switch at single output jack):
a. Video Sweep
b. IF Sweep
c. Markers, unmodulated
d. Modulated markers
e. Channel 4 RF Sweep
f. Channel 10 RF Sweep
g. 10.7 MHz Sweep
1.2 Sweep Width:
a. IF, CH 4, CH 10-less than l MHz to over
10 MHz
b. 10.7 MHz-less than 200 KHz to over 2 MHz
c. Video-less than 1 MHz to over 6 MHz
1.3 Sweep Frequency Coverage (Sweep plus
center frequency adjustment):
a. Video-less than 1 MHz to over 6 MHz
b. IF-35 MHz to 50 MHz
c. CH 4-56.5 MHz to 71.5 MHz
d. CH 10-182.5 MHz to 196.5 MHz
e. 10.7
MHz-8 MHz to 12 MHz
1.4 Sweep Frequency Rate:
60/Sec
1.5 Output levels across 75 Ohms (Nominal):
a. IF-0.3 Volt
b. RF-50,000 microvolts
c. Markers-0.15 Volt
d. Video--1.5 Volts peak-to-peak
e. 10.7-0.3 Volt
1.6 RF Attenuator Range:
60 dB Variable
20 dB Switched
l.7 Output Impedances:
75 Ohms or 300 Ohms. Desired imped-
ance is selected by switch on R-F cable
terminating pad.
l.8 Crystal-Controlled Markers:
(Post Injection System)
IF (10 Standard Frequencies)
a. 39.75 MHz (ADJ PIX)
b. 41.25 MHz (SOUND)
c. 41.67 MHz (CHROMA)
d. 42.17 MHz (CHROMA CARRIER)
e. 42.67 MHz (CHROMA)
f. 42.75 MHz
g. 44.00 MHz
h. 45.00 MHz
i. 45.75 MHz (PIX)
j. 47.25 MHz (ADJ SND)
VIDEO
Internally generated markers available.
CHANNEL 4, CHANNEL 10
Because of the marker generation system,
the r-f equivalents of all i-f markers are
available on Channel 4 and Channel 10.
CUSTOMER OPTION
A spare marker oscillator circuit is pro-
vided for the customer option. The circuit
can be adjusted to accept any third over-
tone crystal in the 35 MHz to 50 MHz range
or, with a minor circuit modification,
it can
be used as a variable frequency oscillator.
10.7 MHz
A 10.7 MHz crystal marker oscillator is
automatically energized when 10.7 MHz
sweep is selected.
1.9 Additional marker provisions:
EXTERNAL MARKER INPUT
External markers can be used in combina-
tion with the internal i-f or 10.7 MHz
markers.
100 KHz MARKERS
A continuous string of markers having 100
KHz separations can be superimposed on
any of the i-f markers or the 10.7 MHz
marker. This enables the operator to inter-
polate frequencies to either side of a crystal
controlled marker in 100 KHz increments.
This feature is valuable in 10.7 MHz f-m i-f
and discriminator alignment as well as in
alignment of automatic fine tuning discrim-
inators in television receivers.
1.10 Bias Supplies:
2 each
± 0 to 25 VDC (750 Ohms Max Im-
pedance)
1
± 0 to 50 VDC (2.SK Ohms Max Impedance)
l.ll Controls:
a. 12 ON/OFF Marker Switches
b. 3 Bias Voltage Adjustments
c. 3 Bias Polarity Switches
d. NORM/REV Horizontal Sweep Switch
e. NORM/REV Vertical Display Switch
f. MARKER AMPLITUDE Control
g. Marker VERT /HORIZ Display
- selects
either vertical or horizontal orientation of
markers.
h. SWEEP WIDTH Control for IF, CH 4, CH
IO, VIDEO and 10. 7 MHz sweeps.
i. CENTER FREQUENCY Control for all
sweep circuits.
j. CHROMA ON/OFF Switch
k. FUNCTION Switch-Selects outputs avail-
able at RF-IF-VIDEO OUT jack and per-
forms internal switching functions.
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