User’s Guide RIGOL
Jan. 2018
RIGOL OCXO-C08 Highly Stable Clock
Product Overview
The highly stable clock (i.g. OCXO module; with the order No. OCXO-C08) is an option f or
RSA5000/RSA3000 series real-time spectrum analyzer and consists of the following parts.
connecting finger: makes electrical connection between the OCXO module and the
real-time spectr u m an alyzer.
gilded rails: ensures good electrical connection between the OCXO module and the
OCXO rail grooves of the real-time spect r u m an alyzer.
OCXO: indicates the oven controlled crystal oscillator.
Disassembly&Assembly Instructions
The connecting me thod of the OCXO module and the real-time spectrum analyzer is as
shown in the figure below.
1. Assembly Procedures:
(1) Remove the OCXO plate on the rear panel of the spectrum analyzer by using the
T10 screwdriver.
(2) Insert the OCXO module into the OCXO slot, as shown in the above figure. Ensure
that the OCXO module is firmly connected.
(3) Fasten the OCXO plate with 3 screws.
2. Disassembly Procedures:
(1) Remove the OCXO plate on the rear panel of the spectrum analyzer by using the
T10 screwdriver.
Connecting Finger
Gilded Rails
OCXO
OCXO Plate
Real-time Spectrum Analyzer
OCXO Slot
OCXO Module
User’s Guide RIGOL
Jan. 2018
(2) Pull out the OCXO module with the needle-nose pliers.
(3) Fasten the OCXO plate with 3 screws.
CAUTION
When disassembling or assembling the OCXO module, please wear antistatic
gloves or make other antistatic precautions to avoid direct contact with hands.
WARNING
To avoid electri c s hock, make sure that the instrument is turned of f and
disconnected from the power supply before disassembling or assembling the
OCXO module.
Specifications
Operating Environment
Temperature: 0
℃
to 50
℃
; humidity: 0 to 80%RH
Storage Environment
Temperature: -20
℃
to 60
℃
; humidity: 0 to 90%RH
Module Dimensions
34.5 mm × 15.1 mm × 77.3 mm
（
W × H × D
）
Module W eight
22 g
Input Voltage
5.00 V ± 0.25 V
Starting Current
< 600 mA
Stable Current
< 300 mA
Output Frequency
10 MHz
Temperature Stability
< 5 ppb
Aging Rate
< 30 ppb/year
Frequency Deviation
< 100 ppb
Warm-up Time
1 h
Note: The specif ications can be guaranteed only when the instrument has been warmed up for 1 hour.
Notices to Usa ge
After the OCXO module is installed, power it on and start up the spectrum analyzer. During
the start-up process, the spectrum analyzer recognizes the OCXO module automatically and
synchronizes with the OCXO module. Note that at this point, no external sync signal is
allowed to be connected to the spectr u m an aly z er.
Press System About System Option Info. If the instrument interface shows that
the OCXO-C08 option is activated, the OCXO module and the spec t r u m an a lyzer are
successfully synchronized. If it is failed to be activated, the synchronization fa il s .
CAUTION
After the OCXO module is installed on th e spectrum an alyzer, the OCXO
module will still be working if you only tur n of f t he Power key on the front
panel without cutting off the AC power supply on the rear panel. Therefore,
please cut off the AC power if you do not us e the spectrum analyzer for a long
period of time.
