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Comtech EF Data DT-4500 Series User Manual

Page 24

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DT4500 Series Down Converters

MN/DT4500.IOM

Introduction

Revision 1

6

Table 2. DT-4503/E C-Band Down Converter Specifications

Characteristic

Specification

Frequency Range
DT-4503/E
Conversion
Step

Size

Preset

Channels

Stability Over Time

Stability Over Temp

4500 to 4800 MHz
Dual, No Inversion
125 kHz standard, 1kHz optional
32 Frequencies
± 1 x 10

-9

/Day

± 1 x 10

-8

/Day 0 to 50

°C ( 32 to 122 °F)

RF Input

Noise Figure

Level
Impedance
Return

Loss


11 dB Maximum at 0 dB Attenuation

-45 dBm Typical
50

20 dB Min. with RF/IF Connector Module

IF Output

Output Level

Range


Intermodulation

Non–carrier Spurious

Carrier Spurious

Return Loss

Impedance


+20 dBm at 1 dB Compression
52 to 88 or 104 to 176 MHz), optional 50 to 80

MHz or 100 to 180 MHz (see Note)

-60 dBc @ 0 dBm Output SCL
-80 dBm
-65 dBc @ +3 dBm Output
23 dB Minimum with RF/IF connector module
50 or 75

Transfer

Gain

Attenuation Adjust

Gain Stability

Ripple: 70 MHz IFCF


140 MHz IFCF

Slope
Image

Rejection

AM to PM

IF

Bandwidth


45 dB ± 2 dB
0 to 20 in 0.25 dB Steps
0.1 dB Steps Optional
± 0.25 dB/Day
± 0.25 dB (± 18 MHz), optional ± 20 MHz,

(see Note)

0.75 dB (± 36 MHz), optional ± 40 MHz,

(see Note)

0.05 dB/MHz
-80 dB Inband
0.1

o

./ dB for Output up to –5 dBm

36 or 72 MHz), optional 40 or 80 MHz,

(see Note)

External Ref.

Input 5 or 10 MHz @ +3dBm
Optional 10 MHz Rear Panel Reference Output

Group Delay

Linear Group Delay

Parabolic Delay

Group Delay Ripple


0.03 ns/MHz
0.01 ns/MHz

2

1.0 ns Peak-to-Peak

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