dB, Max.
dB, Max.
Max.
in MHz.
鈩?/div>
nom.
RF Input Level:
0 dBm nom.
Modulation Sequence
TTL Data Ports 1,2: 0,0 : ref. 0擄
1,0 : -- 270擄
1,1 : -- 180擄
0,1 : -- 90擄
Carrier Suppression: 30 dB nom.
Data Bandwidth:
DC to 50 MHz nom.
DC Power:
+5V @ 25 mA nom.
Weight, nominal:
2.2 oz (65 g)
Operating Temp:
-- 55擄 to + 85擄C
NOTES:
1. Tolerance on 3 place decimals
鹵
.020(.51)
except as noted.
2. Dimensions in inches over millimeters.
General Notes:
1. Units in the JTM-2A series of Quadraphase Modulators are composed of two biphase modulators with TTL drivers,
a 90擄 quadrature hybrid and an inphase power combiner.
2. These devices are generally used in systems to generate QPSK coded signals. The units accept two differential data
inputs each of which independently biphase modulates an RF carrier. These are then combined to produce a
quadraphase output of 0, 90, 180 and 270 degrees.
3. Units in the JTM-2A series are available with center frequencies from 10 to 1000 MHz and having a minimum bandwidth
equal to 10% of the center frequency.
4. Merrimac Quadraphase Modulators comply with the relevant sections of MIL-M-28837 and may be supplied screened
for compliance with additional specifications for military and space applications requiring the highest reliability.
29Apr96
F rf t e if r to c n a t
M ERRI AC /41 Faifel Pl,W estCal
o ur h r n o ma in o t c
M
ri d .
dwel,NJ,07006 / 201- 1300 /FAX 201- 0531
l
575-
575-
1
