Rigol OXCOC08 User’s Guide

User’s Guide RIGOL

Gilded Rails

OCXO Module

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 for
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 spectrum an alyzer.

 gilded rails: ensures good electrical connection between the OCXO module and the

OCXO rail grooves of the real-time spectru m an a lyzer.

 OCXO: indicates the oven controlled crystal oscillator.

Disassembly&Assembly Instructions

The connecting method of the OCXO module and the real-time spectrum analyzer is as
shown in the figure below.

Connecting Finger

OCXO

Real-time Spectrum Analyzer

OCXO Plate

OCXO Slot

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.

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User’s Guide RIGOL

CAUTION

WARNING

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 Weight

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

CAUTION

period of time.

(2) Pull out the OCXO module with the needle-nose pliers.
(3) Fasten the OCXO plate with 3 screws.

When disassembling or assembling the OCXO module, please wear antistatic
gloves or make other antistatic precautions to avoid direct contact with hands.

To avoid electric shock, make sure that the instrument is turned off and
disconnected from the power supply before disassembling or assembling the
OCXO module.

Specifications

Note: The specifications can be guaranteed only when the instrument has been warmed up for 1 hour.

Notices to Usage

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 s pectrum analyzer.
Press System  About System  Option Info. If the instrument interface shows that
the OCXO-C08 option is activated, the OCXO module and the spectrum analyzer are
successfully synchronized. If it is failed to be activated, the synchronization fails.

After the OCXO module is installed on the spectrum anal yzer, the OCXO
module will still be working if you only turn off the Power key on the front
panel without cutting off the AC power supply on the rear panel. Therefore,

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please cut off the AC power if you do not use the spectrum analyzer for a long