|
Model |
HCD220SC |
|
Frequency |
5 and 10MHz
|
|
other
frequencies from 4 to 16MHz by request |
| Crystal
Type |
SC
cut, 3rd overtone, 4-point mounted HC-37/U |
|
Output |
Sine, 0.5V RMS (+7dBm ±1) into
50Ù
|
|
With
options up to +13dBm |
|
Frequency Ageing Rate per
day, at despatch
|
<±2x10-10 |
|
Projected Ageing Rate per year |
<±1x10-8 |
|
Operating Temperature Range |
Standard
–20 to +70oC, options down to –40oC possible |
|
Temperature Stability |
<3x10-9
over –20 to +70oC |
|
Stability With Supply Voltage |
<1x10-9
for 10% change |
| Stability
With Load Change |
<5x10-10
for 10% change from 50W |
| Short
Term Stability
(1sec) |
<1x10-11 |
| Phase
Noise |
Offset |
Typical values |
| (data for 10MHz
quoted) |
10Hz |
-130dBc/Hz |
|
100Hz |
-145 |
|
1kHz |
-155 |
|
10kHz |
-158 |
|
50kHz |
-160 |
|
Warm-Up Error |
±
1x10-8 of final frequency after <10mins at +25oC |
Frequency
Adjustment |
Mechanical: 1x10-6
total span
|
|
Electrical:
1x10-6, +0.5 to +7.0V |
|
+7V
reference output voltage provided |
|
Power Supply |
12 or 24V DC standard, options
from 12-30V possible
|
|
Single
supply is standard |
|
Separate
supplies for oven and oscillator an option |
|
Power Consumption |
5.0W at switch on
|
|
<1.5W
when stabilised at +25oC |
| Harmonics |
<-30dB
wrt carrier |
|
Dimensions (max) |
70mm
long |
|
50mm
wide |
|
40mm
high |
| External Connections |
D9 for power and electrical
frequency control
|
|
SMA
RF output connector an option |
|
Option
for two SMA RF outputs |
|
Warm-up
indicator via D9 an option |
|
Shock |
IEC
68-2-27 Test Ea. 50G for 11ms |
|
Vibration |
IEC 68-2-06 Test
Fc. 10-55 Hz, 1.5mm |
|
55-500Hz,
10G |
|
Storage Temperature |
-40
to +90oC |
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