Text preview for : GFG-813_ADJ[1].pdf part of GW Instek GFG-813 Has anyone got a user manual for a GW Instek function generator GFG-813.
Thanks.
Back to : GFG-813_ADJ[1].pdf | Home
PE-C4-410 PAGE 1
GOODWILL INSTRUMENT
( MALAYSIA ) SDN. BHD.
CALIBRATION STANDARD
PROCEDURES
FUNCTION GENERATOR
MODEL : GFG-813
APPLICABLE ODM MODEL :
FG-813; BK-3040
GW GOODWILL INSTRUMENT ( M ) SDN BHD.
APPROVED BY CHECKED BY PREPARED BY
TOTAL PAGE : 15
( INCLUDING COVER PAGE )
FOR INTERNAL USE ONLY PAGE : 2
CALIBRATION PROCESS MODEL: GFG-813 STATION : PRE-ADJUST
NO Adjustment Location Particular Specification Remarks
1 Initial Setting. POWER Switch = ON; Instrument Used :
EXT COUNTER : release all buttons; 20Mhz O'scope
MAIN GENERATOR : AMPL=Max, ATT= Release,
OFFSET & SYM= Push, TRIGGER PHASE=Free run;
MODULATION : AM, FM & SWP=Release,
MODULATION Output=Max, SYM=CAL.
2 Puncture [ HI POT] Test. Connect AC cord's GND, Life & Neutral pins respective. GPT-515A :
O/P voltage = 1.5 KV
Cutoff Current = 1 mA
Timer = 60 Sec
3 Functioning Check. Check the function of all VRs & button switches 20Mhz O'scope
corresponing to the output waveform.
4 Burn - in. Deliver the sets to the burn-in chamber. 50 ¢J / 4 Hours
GOODWILL INSTRUMENT APPROVED BY CHECKED BY PREPARED BY APPLICABLE ODM MODEL :
(MALAYSIA) SDN. BHD. FG-813
ENGINEERING DEPARTMENT BK-3040
FOR INTERNAL USE ONLY PAGE : 3
CALIBRATION PROCESS MODEL: GFG-813 STATION : 1 of 5
NO Adjustment Location Particular Specification Remarks
1 Initial Setting POWER Switch = ON; Instrument Used :
EXT COUNTER : release all buttons; 1. Dmm [GDM-8045G]
MAIN GENERATOR : AMPL=Max, ATT= Release, 2. 20Mhz O'scope
OFFSET & SYM= Push, TRIGGER PHASE=Free run; 3. 10 Mhz Standard Timebase
MODULATION : AM, FM & SWP=Release, 4. Leveled Sinewave
MODULATION Output=Max, SYM=CAL. Generator [SG-503]
2 + 17V Adjust. VR101 Measure the output voltage of R101 lead (right) relative + 17 +/- 0.01V DMM : 20 VDC
{GFG-427} to GND, adjust VR101 to get +17.0V show on DMM.
3 - 17V Adjust. VR102 Measure the output voltage of R102 lead (left) relative - 17 +/- 0.01V DMM : 20 VDC
{GFG-427} to GND, adjust VR102 to get -17.0V show on DMM.
4 Offset Null Adjust. VR207 Dial scale=Max, Main Generator RANGE=100; DMM : 200 mVDC
{GFG-428} Measure the voltage drop on R237 or R238 relative to
GND by using DMM. Adjust VR207 to get a reading of
110mV.
5 EXT Counter VR001 COUNTER=Ext, GATE Time=0.1sec, 1/10 @ 1/1 <= 15 mVrms SG 503 : 15 mVrms
Sensitivity Adjust. {GFG-429} button=Release; Apply a 10 Mhz 15 mVrms Sinewave Freq : 10.0 Mhz &
signal to EXT COUNTER Terminal, adjust VR001 until 30.0Mhz
the display is stable. Check the display steadiness of
multiple level X1, X.1 & X.01[SG 503] for EXT ATT=1/1
and X1 & X.1 for EXT ATT=1/10. Push 30M/10M button
to select 30M; Repeat the above checking procedures
for the range of 30 Mhz by apply 30Mhz 15 mVrms
sinewave signal to EXT COUNTER Terminal.
6 EXT Counter 10Mhz VC001 GATE Time=1sec,10M/30M=Release; 10 Mhz +/- 100 hz
Timebase Adjust. {GFG-429} Apply 10 Mhz standard Time base to EXT COUNTER
Terminal, adjust VC001 until the counter reads 10Mhz.
GOODWILL INSTRUMENT APPROVED BY CHECKED BY PREPARED BY APPLICABLE ODM MODEL :
(MALAYSIA) SDN. BHD. FG-813
ENGINEERING DEPARTMENT BK-3040
FOR INTERNAL USE ONLY PAGE : 4
CALIBRATION PROCESS MODEL: GFG-813 STATION : 1 of 5
NO Adjustment Location Particular Specification Remarks
7 Main Generator Output Connect MAIN O/P terminal to the o'scope without 50 Without 50 Ohm Load : O'scope Setting :
Level Check. Ohm load, check output level of sinewave, trianglewave 20 ~ 25 Vpp T/D = 1 mS
& squarewave. Repeat the checking procedures by With 50 Ohm Load : V/D = 5 V [Without Load]
connect the O'scope to MAIN O/P terminal through a 10 ~ 13 Vpp V/D = 2 V [With Load]
50 Ohm load.
8 SYNC Output Level Set GFG-813 as step 6, Connect SYNC OUTPUT to Without 50 Ohm Load : O'scope Setting :
Check. O'scope, check output level of sinewave, trianglewave > 1 Vpp T/D = 1 mS
& squarewave. Repeat the checking procedures by With 50 Ohm Load : V/D=0.2V [Without Load]
connect the O'scope to MAIN O/P terminal through a > 0.5 Vpp V/D=0.2V [With Load]
50 Ohm load.
9 Modulation Generator MODULATION : RANGE=10K, Freq=Max;
Output Level Check. Connect MOD. OUTPUT to O'scope, check sinewave,
trianglewave & squarewave output level.
GOODWILL INSTRUMENT APPROVED BY CHECKED BY PREPARED BY APPLICABLE ODM MODEL :
(MALAYSIA) SDN. BHD. FG-813
ENGINEERING DEPARTMENT BK-3040
FOR INTERNAL USE ONLY PAGE : 5
CALIBRATION PROCESS MODEL: GFG-813 STATION : 2 of 5
NO Adjustment Location Particular Specification Remarks
1 Initial Setting. MAIN GENERATOR : AMPL=Max, SYNC=Push, Instrument Used :
OFFSET=Push, ATT=Release, TRIGGER PHASE = 1. Frequency Counter
Free Run; [GFC-8130G]
MODULATION : AM, FM & SWP = Release. 2. 100 Mhz O'scope
2 Main Generator Dial VR201 Dial Scale=Max, RANGE=1K, Counter EXT/INT=Release < 0.5 % 100Mhz O'scope :
Scale MAX Squarewave VR204 Main FUNCTION=Squarewave;Connect SYNC output V/D=5V , T/D=2uS;
Symmetry Adjust. {GFG-428} to Freq Counter [GFC] & MAIN output to a 100Mhz GFC-8130G Setting :
O'scope.Adjust VR201 so that the reading show on GFC FUCTION=FREQ A
is 13.4Khz. Adjust SWEEP VAR of O'scope to get a GATE TIME=Push & Min
positive halfcycle of 10 div show on CRT. Select the TRI LEVEL=Push
the SLOPE to -ve,adjust VR204 to get a balanced LPF,ATT,COUP=Release
waveform.
3 Main Generator Dial VR205 O'scope sweep variable=lock; 100Mhz O'scope :
Scale MIN Squarewave VR206 Dial Scal=Min, Adjust VR206 to get a 5 Div positive V/D=5V , T/D=1mS;
Symmetry Adjust. {GFG-428} cycle and adjust VR205 to get 5 Div negative cycle.
4 Main Generator Dial VR201 Loosen dial scale lock nut, adjuts dial scale to get a GFC-8130G Setting :
Scale Accuracy Adjust. {GFG-427} balance on 1 & 10 scale; tighten the lock nut, turn dial FUCTION=FREQ A,
scale to 10, adjust VR201 to get 10Mhz. Make sure GATE TIME=Push & Min,
the output freq of dial scale Max is greater than 13Mhz. TRI LEVEL=Push,
5 Main Generator Dial VR205 Dial Scale=Min; Connect SYNC output to GFC input 94.5 to 95.5 Hz 100Mhz O'scope :
Scale MIN Frequency & VR206 terminal & MAIN output to O'scope with BNC-BNC. V/D=5V , T/D=0.5mS;
Squarewave Symmetry {GFG-427} Set O'scope T/D=0.5mS, adjust O'scope SWEEP VAR GFC-8130G Setting :
Adjust. to get a 10 Div positive cycle. Set O'scope triggering FUCTION=FREQ A,
to -ve slope; adjust VR205 to get a 10 Div negative cycle. GATE TIME=Push & Min,
Check GFC reading to make sure that the output freq TRI LEVEL=Push,
is within 94.5 to 95.5 Hz. If not, re-adjust VR205 & LPF,ATT,COUP=Release
VR206 with condition that the duty cycle must balance.
GOODWILL INSTRUMENT APPROVED BY CHECKED BY PREPARED BY APPLICABLE ODM MODEL :
(MALAYSIA) SDN. BHD. FG-813
ENGINEERING DEPARTMENT BK-3040
FOR INTERNAL USE ONLY PAGE : 6
CALIBRATION PROCESS MODEL: GFG-813 STATION : 2 of 5
NO Adjustment Location Particular Specification Remarks
6 Main Generator Dial Dial Scale= Min; Check duty cycle with O'scope when < 0.5% O'scope Setting :
Scale MIN Squarewave MAIN RANGE=10, 100, 1K, 10K. If duty cycle is out RANGE V/D T/D
Symmetry Check. of specifications, repeat from step 5. 10 5 V 20 mS
100 5V 2 mS
1K 5 V 0.2 mS
10K 5V 20 uS
7 Main Generator Dial Dial Scale= Max; Check duty cycle with O'scope when < 0.5% O'scope Setting :
Scale MAX Squarewave MAIN RANGE=0.1, 1, 10, 100, 1K. If duty cycle is out RANGE V/D T/D
Symmetry Check. of specifications, repeat from step 2. 0.1 5 V 20 mS
1 5V 2 mS
10 5 V 0.2 mS
100 5V 20 uS
1K 5V 2 uS
8 1 Mhz Frequency VC205 MAIN Generator : RANGE=100K; Dial Scale=10, 970 ~ 1030 Khz GFC-8130G Setting :
Adjust. {GFG-428} FUNCTION=Squarewave; Adjust VC205 to get 1 Mhz
ouput.
9 10 Mhz Frequency VC302 MAIN Generator : RANGE=1M; Adjust VC302 to get 9.5 ~ 10.5 Mhz GFC-8130G Setting :
Adjust. {GFG-428} 10.4 Mhz output.
10 5 Mhz Frequency VC301 Dial Scale=5; Adjust VC301 to get 5 Mhz output. 4.75 ~ 5.25 Mhz GFC-8130G Setting :
Adjust. {GFG-428}
11 Dial Scale Max Dial Scale=Max; FUNTION=Squarewave; check the > 13.1 Mhz GFC-8130G Setting :
Frequency Check. output freq. If the frequency is less than 13.1 Mhz,
repeat from step 8 to step 11.
GOODWILL INSTRUMENT APPROVED BY CHECKED BY PREPARED BY APPLICABLE ODM MODEL :
(MALAYSIA) SDN. BHD. FG-813
ENGINEERING DEPARTMENT BK-3040
FOR INTERNAL USE ONLY PAGE : 7
CALIBRATION PROCESS MODEL: GFG-813 STATION : 2 of 5
NO Adjustment Location Particular Specification Remarks
12 Dial Scale 10 Accuracy Dial Scale=10; Check the output frequency from the RANGE FREQUENCY GFC-8130G Setting :
Check MAIN frequency RANGE = 0.1 to 1M. 0.1 0.97 ~ 1.03 Hz FUCTION=FREQ A
1 9.70 ~ 10.3 Hz GATE TIME=Push & Min
10 97.0 ~ 103 Hz TRI LEVEL=Push
100 970 ~ 1030 Hz ATT,COUP=Release
1K 9.70 ~ 10.3 KHz LPF=Push
10K 97.0 ~103 KHz
100K 970 ~ 1030 KHz
1M 9.50 ~ 10.5 MHz
GOODWILL INSTRUMENT APPROVED BY CHECKED BY PREPARED BY APPLICABLE ODM MODEL :
(MALAYSIA) SDN. BHD. FG-813
ENGINEERING DEPARTMENT BK-3040
FOR INTERNAL USE ONLY PAGE : 8
CALIBRATION PROCESS MODEL: GFG-813 STATION : 3 of 5
NO Adjustment Location Particular Specification Remarks
1 Initial Setting. MAIN Generator : AMPL=Max, SYM & OFFSET=Push, Instrument Used :
ATT=Release, TRIGGER PHASE=FREE RUN; 1. Frequency Counter
MODULATION : OUTPUT=Max, SYM=CAL, [GFC-8130]
FUNCTION=Squarewave. 2. 100 Mhz O'scope
2 Dial Scale Accuracy MAIN Generator : RANGE=100; SCALE FREQUENCY GFC-8130G Setting :
Check. Connect SYNC OUTPUT to GFC then check the output 0.1 0 ~ 65 Hz FUCTION=FREQ A
frequency from dial scale = 0.1 to 13. 1 35 ~ 165 Hz GATE TIME=Push & Min
2 135 ~ 265 Hz TRI LEVEL=Push
3 235 ~ 365 Hz LPF,ATT,COUP=Release
4 335 ~ 465 Hz
5 435 ~ 565 Hz
6 535 ~ 665 Hz
7 635 ~ 765 Hz
8 735 ~ 865 Hz
9 835 ~ 965 Hz
10 935 ~ 1065 Hz
11 1035 ~ 1165 Hz
12 1135 ~ 1265 Hz
13 1235 ~ 1365 Hz
3 MODULATION Generator VR803 MODULATION : RANGE=10K, FREQUENCY=Max;
Frequency Control MAX {GFG-427} Connect MOD OUTPUT to Freq. Counter & O'scope, < 0.5 % GFC-8130G Setting :
Squarewave Symmetry adjust VR803 so that Duty Cycle=50 : 50. Adjust As Previous
Adjust. MODULATION Freq control to get an output freq of 5 Khz O'scope Setting :
Set O'scope V/D to 10uS then check the squarewave V/D=0.5 V
duty cycle again. T/D=2 uS
GOODWILL INSTRUMENT APPROVED BY CHECKED BY PREPARED BY APPLICABLE ODM MODEL :
(MALAYSIA) SDN. BHD. FG-813
ENGINEERING DEPARTMENT BK-3040
FOR INTERNAL USE ONLY PAGE : 9
CALIBRATION PROCESS MODEL: GFG-813 STATION : 3 of 5
NO Adjustment Location Particular Specification Remarks
4 MODULATION Generator VR802 MODULATION : FREQ = Min; < 0.5 % O'scope Setting :
Frequency Control MIN {GFG-427} Adjust VR802 to get 50 : 50 duty cycle. V/D=0.5 V
Squarewave Symmetry T/D=0.5 mS
Adjust.
5 MODULATION Generator MODULATION : FREQ = Min;
Frequency Control MIN Check output duty cycle when MODULATION generator < 0.5 % O'scope Setting :
Squarewave Symmetry RANGE is 100 and 10K. RANGE=100
Check. V/D=0.5 V T/D=50 mS
RANGE=10K
V/D=0.5 V T/D=0.5 mS
6 MODULATION Generator MODULATION : FREQ = Max; O'scope Setting :
Frequency Control MAX Check output duty cycle when MODULATION generator RANGE V/D T/D
Squarewave Symmetry RANGE is 1, 100 and 10K. 1 0.5 V 20 mS
Check. 100 0.5 V 0.2 mS
10k 0.5 V 2 US
7 MODULATION Generator MODULATION : RANGE=10K, Adjust MODULATION > 15 : 1 O'scope Setting :
Variable SYM Check. Generator freq control to get an output of 1Khz; turn V/D = 0.5 V
SYM control fully clockwise. Check duty cycle of the T/D = 0.5 mS
output.
8 Main Generator Variable MAIN : RANGE=100, Dial Scale=10, Fully Anticlockwise : O'scope Setting :
SYM Check. FUNCTION=Squarewave; > 20 : 80 V/D = 5 V
Connect MAIN output to O'scope, pull main generator Fully Clockwise : T/D = 0.1 mS
SYM control , turn it fully clockwise and check duty > 80 : 20
cycle of the output.
GOODWILL INSTRUMENT APPROVED BY CHECKED BY PREPARED BY APPLICABLE ODM MODEL :
(MALAYSIA) SDN. BHD. FG-813
ENGINEERING DEPARTMENT BK-3040
FOR INTERNAL USE ONLY PAGE : 10
CALIBRATION PROCESS MODEL: GFG-813 STATION : 3 of 5
NO Adjustment Location Particular Specification Remarks
9 MODULATION Generator MODULATION : FREQ=Min, FUNCTION=Squarewave; FREQUENCY GFC-8130G
Output Frequency Span Connect MODULATION Output to Frequency Counter, RANGE MIN MAX
Check. check the output frequency when MODULATION Range= 1 < 0.1Hz >1.2Hz
100 & 10K. Set MODULATION FREQ to Max, Check the 100 < 1.2Hz >120Hz
output frequency for MODULATION Range=1, 100 &10K. 10K < 120Hz >12KHz
10 FM Modulation Check. MAIN : RANGE=10K; Connect SYNC OUTPUT to freq. MIN : < 95 Khz GFC-8130G
counter, adjust dial scale to get 100Khz output. MAX : > 105 Khz
MODULATION : FREQ Control = 2 scale before Max,
FM=Press, FUNCTION=Squarewave; Check Max & Min
output frequency.
11 Sweep Width Check. MAIN : RANGE=100K; FM=Release; > 100 : 1 GFC-8130G Setting :
Adjust Dial Scale to get 1.3 Mhz output. Press SWP or < 13 Khz FUCTION=FREQ A
and check MIN sweep frequency. GATE TIME=Push & 10
from Min
TRI LEVEL=Push
LPF,ATT,COUP=Release
GOODWILL INSTRUMENT APPROVED BY CHECKED BY PREPARED BY APPLICABLE ODM MODEL :
(MALAYSIA) SDN. BHD. FG-813
ENGINEERING DEPARTMENT BK-3040
FOR INTERNAL USE ONLY PAGE : 11
CALIBRATION PROCESS MODEL: GFG-813 STATION : 4 of 5
NO Adjustment Location Particular Specification Remarks
1 Initial Setting. MAIN : AMPL=Max, SYM,OFFSET=Push, ATT=Release Instrument Used :
FUNCTION=Sinewave, TRIGGER PHASE=FREE RUN; 1. Distortion Meter
MODULATION : FUNCTION=Sinewave, OUTPUT=Max, [GAD-201B & DM-153B]
AM, FM & SWP=Release, SYM=CAL. 2. Frequency Counter
[GFC-8130G]
3. DC Power Supply
[GPR-3030D]
4. DMM [GDM-8045G]
2 MAIN Generator VR401 MAIN : RANGE=10K, Dial Scale=2; < 0.4 % GAD-201B Setting :
Distortion Adjust. VR402 Connect MAIN OUTPUT to Distortion Meter [GAD-201B] RANGE/SPOT=Press
{GFG-427} through 50 Ohm load. Adjust VR401 & VR402 to get SPOT=20K
least distortion. Set INPUT LEVEL =10 V
DISTORTION=3 % then
Press HOLD
3 MAIN Generator Check Distortion of Main Generator output with setting < 0.4 % GAD-201B Setting :
Distortion Check. as shown below : Same As Step 2 Except
Dial Scale RANGE Dist Meter SPOT=1K
1 1K GAD-201B
10 100 GAD-201B
10 1 DM-153B
1 10 DM-153B
5 10K DM-153B
4 MAIN Generator ATT MAIN : RANGE=100, Dial scale=10; ( - 20 +/- 1 ) dB
Check. ATT= depress -20dB then -40dB; ( - 40 +/- 1 ) dB
Connect DM-153B to MAIN OUTPUT to check the
accuracy of attenuation.
GOODWILL INSTRUMENT APPROVED BY CHECKED BY PREPARED BY APPLICABLE ODM MODEL :
(MALAYSIA) SDN. BHD. FG-813
ENGINEERING DEPARTMENT BK-3040
FOR INTERNAL USE ONLY PAGE : 12
CALIBRATION PROCESS MODEL: GFG-813 STATION : 4 of 5
NO Adjustment Location Particular Specification Remarks
5 MODULATION Generator VR901 MODULATION : RANGE=10K; Connect MODULATION < 1.5 % GAD-201B Setting :
Distortion Adjust. VR902 OUTPUT to Distortion Meter & Frequency counter. RANGE/SPOT=RANGE
{GFG-427} Turn MODULATION Generator FREQ control to get an RANGE = X 100
output frequency of 5 Khz. Adjust VR901 & VR902 to T. FREQ; D Scale=50
get least distortion. Set I/P LEVEL to 1 V &
DISTORTION to 3 %
then press HOLD
6 MODULATION Generator Check the distortion of MODULATION Generator < 1.5 % 1Khz GAD-201B Setting :
Distortion Check. OUTPUT with setting as below : RANGE/SPOT=SPOT
RANGE FREQUENCY D.METER SPOT = 1 Khz
10K 1 KHz GAD-201B 10Khz GAD-201B Setting
10K 10 KHz GAD-201B RANGE/SPOT=RANGE
100 10 Hz DM-153B RANGE = X 100
T. FREQ; D Scale=100
7 VCG 1000 : 1 Check. MAIN : RANGE=100K, Dial Scale=10. Connect DC [-] 1.6 V ~ [-] 2.4 V
Power Supply to VCG IN terminal with reverse polarity,
slowly increase supply voltage until the output frequency
reduce to 1 Khz. Observe supply voltage.
8 VCG Impedance Check. Connect DMM to VCG IN terminal, measure VCG IN 3.50 ~ 3.85 K Ohm DMM Setting :
input impedance. V/mA/Ohm = Ohm
RANGE = 20 K
GOODWILL INSTRUMENT APPROVED BY CHECKED BY PREPARED BY APPLICABLE ODM MODEL :
(MALAYSIA) SDN. BHD. FG-813
ENGINEERING DEPARTMENT BK-3040
FOR INTERNAL USE ONLY PAGE : 13
CALIBRATION PROCESS MODEL: GFG-813 STATION : 5 of 5
NO Adjustment Location Particular Specification Remarks
1 Initial Setting. MAIN : AMPL=Max, SYM,OFFSET=Push. ATT=Release Instrument Used :
TRIGGER PHASE=FREE RUN. 1. 100 Mhz O'scope
MODULATION : AM, FM & SWP = Release, [GOS-6100]
OUTPUT=Max, SYM=CAL 2. Function Generator
[GFG-8016G]
2 MAIN Generator VC701 MAIN : FUNCTION=Squarewave, RANGE=100 K, < 20 nS O'scope Setting :
Squarewave Rising & {GFG-427} Dial Scale=10; Connect MAIN OUTPUT to O'scope V/D = 2 V
Falling Time Adjust. through 50 Ohm load, adjust VC701 to get 18 nS rising T/D = 20 nS
& falling time.
3 Squarewave Overshoot Remove 50 Ohm load, check positive & negative cycle < 4 sub div O'scope Setting :
Check. overshoot. If the overshoot is out of spec, repeat step 2. V/D = 2 V
T/D = 0.2 uS
4 Sinewave Frequency C407 MAIN : FUNCTION=Sinewave, RANGE=100, 6.4 ~ 7.6 Div O'scope Setting :
Responce Adjust. {GFG-427} Dial Scale=10; Connect MAIN OUTPUT to O'scope or < = +/- 2 dB V/D = 2 V
through 50 Ohm load, turn O'scope VAR vertical T/D = 2 mS
sensitivity so that O'scope show 8 Div vertically. Set
MAIN generator frequency RANGE to 1M, adjust C407
to get 7.2 Div. Check the frequency responce at 13Mhz.
5 Trianglewave Frequency C223 MAIN : FUNCTION=Trianglewave, RANGE=100, 6.4 ~ 7.6 Div O'scope Setting :
Responce Adjust. {GFG-427} Dial Scale=10; Connect MAIN OUTPUT to O'scope or < = +/- 2 dB V/D = 2 V
through 50 Ohm load, turn O'scope VAR vertical T/D = 2 mS
sensitivity so that O'scope show 8 Div vertically. Set
MAIN generator frequency RANGE to 1M, adjust C223
to get 7.2 Div. Check the frequency responce at 13Mhz.
GOODWILL INSTRUMENT APPROVED BY CHECKED BY PREPARED BY APPLICABLE ODM MODEL :
(MALAYSIA) SDN. BHD. FG-813
ENGINEERING DEPARTMENT BK-3040
FOR INTERNAL USE ONLY PAGE : 14
CALIBRATION PROCESS MODEL: GFG-813 STATION : 5 of 5
NO Adjustment Location Particular Specification Remarks
6 AM Modulation Balance VR601 MAIN : FUNCTION=Sinewave, RANGE=10K, Dial scale= < 0.5 Sub Div of 8 Div O'scope Setting :
Adjust. {GFG-427} Max; MODULATION : FUNCTION=Sinewave, AM=Press, V/D = 2 V
Press; RANGE=100, FREQ=Max. T/D = 0.5 mS
Adjust VR601 to get a balanced Modulation waveform.
7 AM Modulation DC R614 Check AM Modulation DC Offset. If it is out of spec, < 1 Sub Div of 8 Div O'scope Setting :
Offset Adjust. {GFG-427} change the value of R614. Same as Step 6
8 AM Modulation EXT MODULATION : FUNCTION=Release; > 100 % O'scope Setting :
Sensitivity Check. Apply 1 Mhz, 10 Vpp sinewave to EXT MOD input, check V/D = 2 V
AM Modulation waveform. T/D = 0.2 uS
9 Max TRIGGER PHASE MAIN : RANGE=100K, FUNCTION=Trianglewave, > 90 O'scope Setting :
Angle Check. Dial Scale = 10; V/D = 2 V
MODULATION : FUNCTION=Squarewave, AM=Release, T/D = 10 uS
RANGE=10K, FREQ=Max;
[Rear Panel] : TRIGGER=MULTIPLE/INT;
Connect MAIN OUTPUT to O'scope, adjust VAR vertical
sensitivity of o'scope until the signal amplitude is 8 Div
show on the scope CRT. Turn TRIGGER PHASE fully
clockwise, check the TRIGGER PHASE angle.
10 Min TRIGGER PHASE [Rear Panel] : TRIGGER=SINGLE/INT; < - 80 O'scope Setting :
Angle and SINGLE Trigger Adjust TRIGGER PHASE anticlockwise to lowest V/D = 2 V
Check. trigger phase angle. T/D = 0.2 uS
11 EXT TRIGGER Check. [Rear Panel] : TRIGGER=MULTIPLE/EXT; O'scope Setting :
Apply 1 Khz TTL signal to EXT TRIGGER INPUT [rear V/D = 2 V
panel]; check the functioning of EXT TRIGGER. T/D = 0.1 mS
GOODWILL INSTRUMENT APPROVED BY CHECKED BY PREPARED BY APPLICABLE ODM MODEL :
(MALAYSIA) SDN. BHD. FG-813
ENGINEERING DEPARTMENT BK-3040
FOR INTERNAL USE ONLY PAGE : 15
CALIBRATION PROCESS MODEL: GFG-813 STATION : 5 of 5
NO Adjustment Location Particular Specification Remarks
12 TTL OUTPUT Level TRIGGER PHASE=Free Run; Connect TTL OUTPUT to > 3V O'scope Setting :
Check. O'scope, check the output amplitude. V/D = 1 V
T/D = 0.5 uS
13 TTL Rising / Falling Time Connect TTL OUTPUT to O'scope through 10 : 1 probe, < = 25 nS O'scope Setting :
Check. check rising and falling timeof the GFG-813. V/D = 0.5 V
T/D = 20 nS
GOODWILL INSTRUMENT APPROVED BY CHECKED BY PREPARED BY APPLICABLE ODM MODEL :
(MALAYSIA) SDN. BHD. FG-813
ENGINEERING DEPARTMENT BK-3040