Holland Electronics DST-5000 User Manual
DST-5000/DSTR-5000
DARK SYSTEM TE STER
Table of Contents
Features / Specifications…………………… …...… ….………… . 1
Keypad Illustration
Key Function Description……………….………….…………….. 3
Getting Started Tips:
Powering the Transmitter & Receiver……………………... 5
1.
Adjusting the Transmitter Carrier Power Levels……….. 5
2.
Main User Instructions:
Operating Modes
1 Turning Power On……………..…………………………….….…. 6
2 REC Mode………………………………………… .………… .…… .. 6
3 Cable ID Mode
4 TDR Mode………..…………………………………….…… ..…….. 9
5 Auto Shut Down Selection……………………..………………. 11
Appendix A:
Appendix B:
RS-232 Cable Pin-Out Details…………………………. 28
Rev B
6 Downloading Data to a Remote PC via RS-232 11
7 Charging Batteries………………………………… ……………. . 12
Warranty…………………………………………………..……….. .… 14
Configuring the RS-232 Port on a Remote PC……... 15
………… . . . …………………………..…… …… 3
……………………… …………….……..… ……… .. 8
FEATURES
* TDR Feature to ID Cable Faults (Open & Short) * RS-232 Data Downloading Port
* Signal Level Loss tested @ 5 frequencies * Auto Shutoff Power Saving Feature
* Cable ID Function * 8 HR Re chargeable Li-On Batt eries
* 50 Memory Stations
DARK METER RECEIVER (Model # DST-5000) SPECIFICATIONS
Input :
Input Impedance 75 ohm
Input Frequency Cable Mode : 20, 55.25, 950, 1450, 2150MHz
Input Level Range Cable Mode : +23dBmV ~ -16dBmV @ 20, 55.25, 950, 1450, 2150MHz
Connector F male
LCD Di splay:
Display type STN, B/W, DOT Matrix 64 128
View area 70 40mm
Measurement Range:
Level measur ement: Cab l e Mod e : 0 ~ 40dB @ 20, 55.25MHz
0 ~ 40dB @ 950, 1450, 2150MHz
Full display level: 40dB total in 20 Bar steps @ 2db
Level per step: 2dB per step
Store Stations 50 Station
Cable ID: 1 ~ 20 ID tags
@ Tagging resistor range 1.0K ohm to 20.99K ohm
@ Nominal tag value1: 1.0 …….1. 99K ohm
2 : 2.0 ……..2.99K ohm
20 : 20.0……20.99K ohm
@ SHORT 220 ohm
@ OPEN 21K ohm
TDR :
Test cable RG58, RG59, RG6, RG11
Impedance 50 or 75 ohms
Measure cable lengths 300 ft Max./ 15ft Min.
Accuracy +/- 3.5ft @ 20ft, +/- 6.0ft @ 200ft and +/- 3% @ 300ft
Power Req uired:
Battery, Rechargeable Li- Ion, 7.4VDC @1600mAH
AC Line Voltage 100-240V 50/60Hz
Charge Time 5 HRS typ. w/Built-in Charger
DC Adapter 9 VDC @800mA
PC Interface:
RS232 Use with WINDOWS SMART TERMINAL
RS232 Connector DB9
Mechanical:
Dimensions (W H D) 104 47 234mm
Weight 500g
STANDARD ACCESORIES
Battery Charger: 1 pc Carrying Case w/strap: 1 set
Barrel Connector: G-F81F* 2 pcs Operators Manual: 1 copy
RS-232 Data Transfer Cable 1 pc
Electronic copie s of the Users Manual are available on our website:
www.hollandelectronics.com/support.html
1
DARK METER TRANSMITER (Model # DSTR-5000) SPECIFICATIONS
Output :
Output Impedance 75 ohm
Output Frequency Cable Mode : 20, 55.25, 950, 1450, 2150MHz
Output Level Range Cable Mode : +20dBmV max @ 20, 55.25, 950, 1450, 2150MHz
Output Control Range 5 ~ 10db
Connector F male
Power Req uired :
Battery, Rechargeable Li- Ion, 7.4VDC @ 1600mAH
AC Line Voltage 110-240V 50/60Hz
Charge Time 5 HRS typ. w/Built-in Charger
DC Adapter 15VDC @ 800mA
Mechanical :
Dimensions (W H D) 87 40 130 mm
Weight 335 g
STANDARD ACCESORIES
Battery Charger: 1 pc
Carrying Case w/strap 1 set
Barrel Connector 2 pcs
2
KEYPAD ILLUSTRATION
Key Functions :
1. Key :Power Key
ON/OFF
2. MR Key :Store Key
Press to store data in memory
3. MC Key :Clear Key
This key serves two functions while the meter is in the REC mode :
3.1 P ress MC Key for 2 seconds :
Erase the current station mem ory.
3.2 P ressMC Key and the STKey) for 5 seconds :
Erase all station memories.
4. B. LIT Key :
Press to turn On/Off the LCD display back lighting.
3
5. TEST Key:
Press this key in the TDR mode and measure a distance to a cable fault
6. VOP Key:
Toggle the VOP Key to select from the preprogrammed VOP values for
different cable types.
7. MODE Key :
This key allows the user to select measurement & setup modes:
7.1 Push the MODE Key to select REC mode :
Measure 5 carrier signal levels from the Dark Transmitter.
7.2 Push the MODE Key again to select CABLE ID mode :
Tags an ID number to a cable that matches the resistor value terminated
at the cable end or displa ys OPEN or SHORT if either conditi on exists.
7.3 Push the MODE Key again to select TDR mode :
Measures distance to a cable fault (open/short), using TDR technology
7.4 Push the MODE key again to select Auto Shutdown Mode and then
select the inactivity period before the meter automatically shuts down.
8. CAL Key :
This key activates 2 functions:
8.1 Press the CAL Key in REC mode :
This is to store the input signal level as a calibrating reference level.
8.2 Press the CAL Key in TDR mode :
This is to store the VOP value calculated from a 20 ft cable as a
calibrat ing refer ence VOP value.
9. PC Key :
Press to download saved signal level data via the RS232 port to a PC
10/11. / Keys :
Use to select memory stations
4
Getting Started
_____________________________________________________________________
Powering the Dark System Transmitter and Receiver
The transmitter (DSTR-5000) and receiver (DST-5000) are shipped without the
batteries installed. The user should remove the rear cover on each unit and
install the battery packs before proceeding.
Using the external AC power supply: Make sure that the available AC
A)
line voltage is 110-240V, 50/60 Hz. Connect the DC output plugs f rom
each of the ada pter/cha rgers t o the DC recept acles on t he DST and
DSTR units.
B) Powering the transmitter and receiver with internal batteries: In order
for the DST and DSTR t o operate from the internal batteries, a suff icient
charge must exist on the batteries. The recommended time to fully
charge the batteries is 5 hours. The power supply / battery charger
included with the DST-5000 is different than the power supply / battery
charger for the DSTR-5000. DO NOT interchange the chargers. The
batteries will charge whether the units are switched On or Off. When
the charg er for the transmit ter (DSTR) is c onnected to an AC so urce,
the Charge LED will be illuminated Amber during a charging cycle
and Green if charging is complete.
Warning: Only Use The Power Supply / Battery Charger Supplied by Holland
Electronics with The Transmitter (DSTR-5000) and the Receiver (DST-5000).
Do not interchange the charging units between the DST and DSTR units.
Use Of Any Other Chargers Will Void the Warranty and Can Cause
Damage Or Injury.
Adjusting the transmitter carrier output levels
The transmitter carrier power levels should not normally need to be adjusted for
the Dark System to operate properly. Ho wever, the levels can be checked
when the uni t is used for the fir s t time or should the op erator experience trouble
using th e equipment during normal operation.
The transmitter (DSTR-5000) output consists of five different frequency carriers.
The power level of ea ch carrier can be adjusted separately with the
potentiometers mounted on the top of the housing (near the output connector).
The exact output level of each carrier is not extremely critical for nor mal
operati on because the receiver input referenc e levels for each carr ier
frequency are set to match the transmitter levels during a calibration process
the user performs b y connecting the transmitter and receiver to gether pri or to
making signal level measurements (See Section 2.1).
If the user prefers to know the ex act transmitt er output po wer levels then the
transmitter can be directly connected to a spectrum analyzer or a power meter
and each of the carrier levels set to a known value. Always reconnect the
receiver and transmitter together and perform a calibration exercise to reset the
receiver input reference levels (See Section 2.1) after adjusting any of the
transmitter output level potentiometers.
5
Operating Modes:
Once the meter power is turned on there are three different o perating modes
and one set-up mode tha t can be selected. Pressing the MODE Key repeatedly
will sequence the receiver through the different modes as described below in
sections 2 - 5.
1. POWER ON
Press the Power Key to turn on the receiver. The LCD display will look
similar to the following:
2. REC MODE
In this mode, the amount of inser tion loss between the transmitter and
receiver connected to a cable under test is measured and displayed for fi ve
different frequenci es. These insertion l oss values can also b e stored in
memory and then recalled at a later time for review or downloaded to
another device via the RS-232 port.
• The measurement level is displ ayed over a range of 20 bars, at 2 dB per
bar. When all bars are illumina ted for a given frequency t hen there is less
than 2db of measured signal level insertion loss betw een the tra nsmitter
and receiver.
6
2.1 Measuring Insertion Loss:
The Insertion Loss or the Attenuation of the cable under test (CUT) can be
measured as follows:
2.1.1 Connect the transm itter dir ectly to the i nput of the receiver. Use a high
quality splice or a jumper cable that is no more than 1 2 inches between
transmitter and receiver for this step. NOTE: Normally the transmitter
output levels do not require adjustment b efore perfo rming this step unles s
the operat or is experiencing erratic op erati on or measurements
2.1.2 Press th e CAL Key to initiate a calibration operation. The receiver will store
the measured signal levels of each carrier and use them as reference
levels. The LCD display will appear as shown below.
2.1.3 The display will t hen show all five bars fully illuminated across the screen
and –0db noted for each fr equency. If -0db is not displayed for each
value then try adjusting the carrier level potentiometer on the transmitter
for the frequency in question a nd repeat t he calibrat ion procedure.
2.1.4 Disconnect the transmitter fr om the receiver and connect the transmitter
to one side of the CUT and the receiver to the other side. The receiver will
display the a ttenuation values of the CUT. The LCD should look similar to
the following :
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