Atec Aeroflex-3920 - Manual (Page 17)

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FREQUENCY STANDARD I/O
INPUT/OUTPUT CONNECTORS
Impedance 50 Ω (nominal)
VSWR Better than 1.2:1 (RF freq. <1.05 GHz)
Better than 1.3:1 (RF freq. >1.05 GHz to
<2.7 GHz)
Input Protection 200 W with warning above 135 W or power
termination temp >100
o C. Recommended
max of 30 s ON and minimum of 2 min OFF
for power levels above 50 W. (Remove
power immediately when alarm sounds.)
GPIB
Connector Type 24 pin IEEE
Function IEEE-488.1-1997
ETHERNET
Connector Type 8 Position, RJ-45 100/10 Mbit/s
Function 10/100 Base-T network connection
RS-232
Connector Type 9-pin, D-sub, Male
Baud Rates 300, 600, 1200, 2400, 4800, 9600,
19.2k, 38.4k, 57.6k, 115.2k
Stop Bits 1 or 2
Parity Odd, even, none
VIDEO
Connector Type 15-pin, D-sub, VGA
Function VGA for external monitor
IF OUTPUT
Connector Type BNC
Function 10.7 MHz Receiver IF
Output Level Proportional to Receive Signal Level
MIC/ACCESSORY
Connector Type 8 position, female DIN
Function Microphone connection, modulation input,
demod output, PTT operation
PARALLEL PORT
Connector Type 25 position, female D-sub
Function Printer interface
USB
Connector Type Twin USB standard connection (rear panel)
Single USB standard connection (front
panel)
Function USB Version 2.0 interface
TEST PORT
Connector Type 15 position, female 3 tier D-sub
Function Programmable I/O and voltage output
(optional interface)
AUXILIARY IF INPUT
Connector Type High-density dual inline
Function External digital receiver input (optional
interface)
ANT (RF INPUT)
Connector Type TNC
Function Receiver input
Impedance 50
Ω
(nominal)
VSWR (with Attenuation
≤10 dB):
Better than 1.44:1 (RF freq.
<1.05 GHz)
Better than 1.58:1 (RF freq.
>1.05 GHz to <2.7 GHz)
Input Protection 10 W with warning above
+17 dBm (Remove power
immediately when alarm
sounds)
GEN (RF INPUT)
Connector Type TNC
Function Generator high-level output
Impedance 50
Ω
(nominal)
VSWR (with level <0 dBm): Better than 1.7:1 (RF freq.
<1.05 GHz)
Better than 1.9:1 (RF freq.
>1.05 GHz to <2.7 GHz)
Input Protection 10 W with warning above
+23 dBm (Remove power
immediately when alarm
sounds)
T/R (RF INPUT/OUTPUT)
Connector Type Type N
Function RF power input, generator
low-level output)
INTERNAL FREQUENCY
STANDARD OUTPUT
Frequency 10 MHz (nominal)
Output Level 1 Vpp (nominal) into 50 Ω
Temperature Stability (0 to
50 o C)
±0.01 ppm
Aging Rate ±0.1 ppm/year after 1 month
continuous use
Warm Up Time Less than 5 min. to ±0.02 ppm
EXTERNAL FREQUENCY INPUT
Frequency 10 MHz
Input Level 1 to 5 Vpp for sine waves
3.3/5 V TTL for square waves
Connector BNC socket (10 k
Ω
Input/50
Ω
Output)
LEVEL
Vertical Scales 1, 2, 5, 10, 20 dB per division
Reference Level 0 dB Full Scale (dBr)
Dynamic Range Greater than 120 dB
Accuracy ±1 dB from 300 Hz to 15 kHz
MARKERS
Number of Markers 2
17